(BH 1.2) (a) How many 7-digit phone numbers are possible, assuming that the first digit can't be a 0 or a 1? The 6th digit is chosen from the remaining 5 numbers. Solved: A telephone number consists of 7 digits. How many ... List of mobile telephone prefixes by country - Wikipedia How do I find out my Togo number? How to Call Argentina Phone Numbers - Lebara Ask him to call you. Mobile numbers begin with digits '7', '8', or '9'. Quite a few countries now have 8-digit telephone numbers, in at least some part (s) of the country. This is approximately 4.2% of them . 2. That means there are a total of 90,000 different 5 digit numbers. Ask Your Own Homework Question. 01-13-2014 12:17 PM. How many 7 digit phone numbers are there in which the digits are non-increasing? How many digits are in a mobile number? - Quora The Netherlands's telephone numbers are made up of 11 numbers split into groups of 3. The 4th digit is chosen from the remaining 7 numbers. Answered in 5 minutes by: 5/4/2020. The first two digits of a landline designate an area code for a geographic part of the country. Therefore, there will be as many phone numbers as there are ways of filling 3 vacant places . Question: How many 7-digit phone numbers are there in which every digit on the right is less than or equal to the previous one. Some of the common area codes in the Netherlands include Amsterdam (20), Rotterdam (10) and The Hague (70). How many digits is Togo number? 8-digit numbers were in effect for mobile phones and pagers as of 1 September 1995, with 9 added before the previous 7-digit mobile number (source: Singtel). Country code: +228. SOLUTION: Suppose any 7-digit number whose first digit is ... +26226. Does phone number include area code? Examples: 416-509-6995 or (416) 509-6995. 011 - 228 - phone number *Use also to TEXT Togo numbers. Japan plans to create 10 billion 14-digit phone numbers in response to fears that the country's 11-digit numbers could run out by 2022. Kazakhstan's telephone numbers are made up of 11 numbers split into groups of 3. We review their content and use your feedback to keep the quality high. d. the first 3 digits are 481? I still have the box of my phone but that box has a IMEI Number of 14 digits only! How many phone numbers can be made if the first digit must be 1, the second digit must be a number in the range 3-5, the third digit must be a number in the range (6-9), and the last seven digits can be any single digit number 0-9? Therefore, the codes in togo telephone number is also known as the to landline phone number. Answer: How many digits are in the original Questioner's mobile number? Area codes in Vietnam that start with 2, 3, 5, 6 or 7 have 7 digit subscriber numbers. For instance the number 617−000−0000 is a possible phone number) HELP ASAP PLZ How many permutations of a 7-digit phone ... Active 7 months ago. The number of digits in an international subscriber number is limited to an absolute maximum of 12.In practice with a few exceptions; world numbers are limited to 11 digits. '0' is used as a trunk prefix (long distance code). You can help Wikipedia by expanding it. As a result the number, the number of digits available for a national numbering plan is 11-N,where N is the number of digits in the country code. How many 5-digit telephone numbers can be constructed using the digits 0 to 9 if each number starts with 67 and no digit appears more than once? Stars and Bars - Discrete Mathematics Within this area code how many ex- change numbers are pOssible? The country code of USA is +1. How many 7-digit phone numbers are possible, assuming that the first digit cannot be a 0 or a 1? Without restrictions, it was would numbers 000-000-0000 through 999-999-9999. Phone numbers in Italy - how many digits? - Fodor's Travel ... +12. How many 7-digit phone numbers can be formed if first ... There are $\mathbf{10}$ (digits 0-9) possibilities for digits from 2 to 7. So if you're going to make a call to Togo using a mobile phone, you should dial country code+area code+6-digit number. To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW Every telephone number consists of 7 digit How many telephone numbers are there . How many 7-digit phone numbers are there in which every digit on the right is less than or equal to the previous one. Every country, including the United States of America has a stipulated number of digits in its phone number. So if you're making a call to Lome, dial +228 22 123 456. In Hanoi and Ho Chi Minh City, existing 7-digit subscriber numbers became 8-digit format, while in other regions existing 6-digit subscriber numbers became 7-digit. Best Answer. 3. End of dialog window. Information about phone numbers in Togo. Mobile phone numbers can have a 4 or 5 digit prefix and look like this: 0171 6895430 or like this 01513 6895430. Share this conversation. While area code 600 has been established as a non-geographic code that can be used by mobile phones, the only significant mobile usage has been for satellite phone service in remote regions. Give your mobile number to one of your classmates. … Get solutions Get solutions Get solutions done loading Looking for the textbook? So if you're going to make a call to Togo using a mobile phone, you should dial country code+area code+6-digit number. How many 6 digit combinations are there using 0-9? Viewed 13k times 2 $\begingroup$ I use the multiplication rule. Base case is reached when you get the question "How many 1-digit numbers are there starting from X " (and the answer is obviously 1). That is, every digit is less than or equal to the previous one. So if you're going to make a call to Argentina using a mobile phone, you should dial country code+area code+6-8-digit number. Take it step-by-step . ∴ Total number of seven digit phone numbers = (8 × 10 × 10 - 3) × 10 × 10 × 10 × 10 = 7970000. But, do you know why these area codes are required in a New York telephone number. How many telephone numbers are possible if repetition of digits is allowed? Stat 110 Homework 1 Solutions, Fall 2015 1. Therefore, there will be as many phone numbers as there are ways of filling 3 vacant places by the digits 0 - 9, keeping in mind that the digits cannot be repeated.. Argentina's telephone numbers are made up of 12 to 13 numbers split into groups of 3. The program should use function strtok to extract the area code as a token, the first three digits of the phone number as a token, and the last four digits of the phone number as a token. In some cases, the 10-digit number will be preceded by a ' 1 ' signifying both the country code and domestic long distance code. There are 900000 possible ways to get 6 digit numbers using 0 - 9.. How many numbers are there in 5? Australian fax numbers have an 8 digit local phone number with a 1 digit area code. In the same fashion, if phone numbers were to have 9 digits, this would only satisfy 1,000 million (100 crore) subscribers. Show More. The way it would probably work is that if your phone number was 555-123-4567, this would be changed to 555-123-04567. We can now multiply the number of ways for each term, we get ⇒ 9 × 9 × 8 × 7 × 6 × 5 × 4 = 544320 ways. Etisalat (UAE carrier) announced that wireline/geographic subscriber numbers will expand from 6 to 7 digits by May 2000. Dial *505*4*2# to check your Tigo phone number. Unleashed (Mobile Vikings / JIM Mobile) (or other) Users can switch carriers while keeping number and prefix (so prefixes are not tightly coupled to a specific carrier). Phone numbers in the United States typically consist of 11 digits — the 1-digit country code, a 3-digit area code and a 7-digit telephone number. The following are the telephone codes in Togo . Hence, the 10-digit mobile number. there is no standard number of digits for phone numbers as in North America, some land lines have 6 digits (after the area code)some 7 and I think in some rural areas some . So that would be 9,999,999,999 + 1 = 10 billion different 10-digit phone numbers. Edwin Browse our sites area and region codes by region and city to ensure you have the correct information for your calls. Hi how many digits are there in a uk mobile phone number ? We need to decide on 7 digits so we will use 7 stars. Within this exchange, how many line numbers are possible? It follows that π (9999999999) ≈ 434,294,481 and π (2002000000) ≈ 93,475,343, which means that there are roughly 340,819,138 10-digit prime phone numbers. Here is how to answer your question: 1. STD codes are either 4, 3 or 2 digits. The 5th digit is chosen from the remaining 6 numbers. The number is 323498621632349, there is no way I'm going to call it back as it would probably be international. For the last 6 digits I have 10 choices for each. End of dialog window. Fixed phone numbers in Togo are comprised of a single country code (+228), a 2 digit area code, and a 80 digit line code. The 228 area code is for using the landline phone number. The subscriber's phone number is 6, 7 or 8-digit long depending upon the length of the STD code. However, if dialling from outside the UK, that is, from another country, then the initial zero is substituted with either 0044 or +44. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . The 4th digit is chosen from the remaining 7 numbers. Syria Fake phone numbers are starting 93-96,98,99 and country code of Syria is +963. When your phone rings, answer the call, and ask him how many digits he needed to press in order to call y. **011228 and +228 often work interchangeably from cell phones. Network coverage Network coverage is readily available across Togo. now they wont register a complain untill i have a 15 digits imei number. The first digit designates whether the phone number is a landline or a mobile phone. India's national numbering format is 10-digit for both land line phone as well as cellular phone services. It is given that the 5-digit telephone numbers always start with 67. (b) Re-solve (a), except now assume also that the phone number is not allowed to start with 911 (since this is reserved for emergency use, and it would not be desirable for the system to wait to see whether more digits were going to be . Making a call with the wrong country, area, or region code can be costly. As with landline numbers, mobile numbers may be preceded by a ' 1 ' which is used as both the country code and domestic long distance code. When you want to call a German mobile phone number from abroad, the same rules as with landline numbers apply. 456. Take it step-by-step . c. A number such as 911-_ _ _ _ "WASTES" a lot of phone numbers. All existing numbers would have a zero added to the front of the suffix to carry them over into the new system. Example of an Australian fax number. (any decimal digit can be the digit of a phone number. Ask Question Asked 1 year, 10 months ago. What are the middle digits in a phone number? The units place can be filled by any of the digits from 0 - 9, except digits 6 and 7. 011 - 229 - phone number *Use also to TEXT Benin numbers. Short code: TG. c. the telephone number must be a multiple of 100? v t e Telephone numbers in Africa This Togo -related article is a stub. So including country code, the minimum length is 9 digits for Sweden and 11 for Israel and 8 for Solomon Islands. Some of the common area codes in Peru include Lima/Callao (1), Arequipa (54) and Piura (73). 6: 7 : by the digits 0 - 9 . Calling formats yyy xxxxx - Calling inside Togo +228 yyy xxxxx - Calling from outside Togo The NSN length is eight digits. There are 604,800 possible permutations. Syria Fake phone numbers are recommended for drama use, such as those involving TV shows and radio entertainment, however you can also use our random phone numbers when providing documented examples on websites or in printed literature. This 10-digit format is expected to remain for another 30 years. Location. b-How many distinct telephone numbers are possible with three digit are codes preceeding the seven digit number, where the first digit of the area code cannot be 0 or 1. c- with the increasing use of cell phones and paging systems, our society is beginning to run out of usable phone numbers. How many possible area cod s are there? Answer. So if you're going to make a call to Kazakhstan using a mobile phone, you should dial country code+area code+5-7-digit number. To dial a fax number within the same area code, only the 8 digit number is dialed, for a total of 8 digits. How many are possible if repetition of digits is not allowed? It can validate a phone number in E164 format directly. Thus, if phone numbers were to have 2 digits, how many different number combinations would be available? there is no standard number of digits for phone numbers as in North America, some land lines have 6 digits (after the area code)some 7 and I think in some rural areas some . Phone number format in Togo: +228 - Area Code - Local Number. Some of the common area codes in Argentina include Buenos Aires (11), Mar del Plata (223) and Mendoza (261). b. Area codes that start with 4 (for Hanoi) and 8 (for Ho Chi Minh City) have 8 digit subscriber numbers (except for area code 80 which is used exclusively by the government and is followed by a 5 digit subscriber number). Permissive use of old format numbers was allowed until 1 November 2008 (or for some regions and carriers, the mandatory use of new format was introduced as early as 26 October 2008). Expert Answer. So the total number of ways the word MISSISSIPPI can be permuted $= \mathbf{\dfrac{10!}{4!4!2!}}$. number. How many 7-digit phone numbers are there that are non-decreasing (meaning that each digit is not less than the previous one)? a. Mobile numbers are written identically to landline numbers in this 10-digit format: aaa-nnn-nnnn. The specific words in a phone number used to identify the two-letter codes were recommended by AT&T/Bell in their Notes on Nationwide Dialing, 1955, which was distributed around the country as people started to make long-distance calls.You can find a list of names for each telephone exchange here. Over the last few weeks every once in a while I have been receiving calls from a 15 digit phone number on my smartphone. So, the first three digits can be filled in (8 × 10 × 10 - 3) ways (We need to exclude the numbers 555, 411 and 936 also from first three digits) The last four digits of the telephone number can be filled in (10 × 10 × 10 × 10) ways. [number of 8-digit numbers starting from 1] + [number of 8-digit numbers starting from 3] and so on. Togo's telephone numbers are made up of 11 numbers split into groups of 3. Because there are no more restrictions for phone numbers that don't work (first digit can't be one or zero was the only restriction), the question then becomes : How many 6 digit numbers are possible (000000) can count , well we know that the biggest 6 digit number is 999999 and the smallest is 000000. Generally, a New York City landline phone number will be written with dashes and look like this: aaa-nnn-nnnn as in 212-509-6995. Solutions for Chapter 6.3 Problem 25E: A telephone number consists of 7 digits. Experts are tested by Chegg as specialists in their subject area. Previously, subscriber numbers were 5 or 6 digits, with area code plus subscriber number totalling 7 digits. Were I to guess, a 5-digit suffix, signifying the end of the 10-digit for 11-digit. Peru's telephone numbers are made up of 10 numbers split into groups of 3. Belgium. The bars will represent a switch from each possible single digit number down to the next smaller one. Since each digit choice is independent, we just multiply all these choices together: #N = 9 xx 10 xx 10 xx 10 xx 10 xx 10 xx 10 = "9 million possibilities"# If we visualize the phone number as having three "slots": one for the area code, one for the first digit and the last being the six remaining digits, by the multiplication principle, there is 1 way to complete filling the first slot, 9 ways to complete the second slot, and $10*10*10*10*10*10$ ways to fill the last slot; giving $1*9*10^6$ ways. The Wheatbaker lists its phone number in Lagos as + 234 (1) 277 . The number of possible permutations of x elements from a set of n elements is given by the following formula: In this question: 7 digits from a set of 10(10 digits to 0-9). (Tokenizing Phone Numbers) Write a program that inputs a telephone number as a string in the form (555) 555-5555. So if you're going to make a call to Peru using a mobile phone, you should dial country code+area code+6-7-digit number. Country. 9. There are 9 ways to pick the first digit [1-9] Next, there are 9 ways to pick the second digit [0 plus the remaining 8 from the first digit] The 3rd digit is chosen from the remaining 8 numbers. The largest 5 digit number is 99999.99999 minus 10000 is 89999, but since you have a zero-based count, you have to add 1. Now to block my phone the authorities over here are asking for a 15 digit IMEI number. **011229 and +229 often work interchangeably from cell phones. Various phone companies are developing phone numbers . For the first digit I have 8 choices. The worst part about using Togo phone numbers is that it does not have the features that you can get from regular lines, which is why it is more used by those who do not have to care too much . It is given that the 5-digit telephone numbers always start with 67. The 1st digit has $\mathbf{8}$ possibilities (digits 2-9). e. no repetitions are allowed? Telephone Numbers How many 7-digit telephone numbers are possible if the first digit cannot be zero and a. only odd digits may be used? Or you can do it by saying there are 10 ways to choose the 1st digit after the the 281. 011 - 228 - phone number *Use also to TEXT Togo numbers. Look at the main phone number for HowStuffWorks as we go through the meaning of the different blocks. Some countries, like Australia, have 8-digit local numbers throughout the country, from the. The first digit can be any of #1# through #9# and can be selected in nine different ways. The area code for Chicago is 312. The 3-3-4 scheme, developed by AT&T in 1947, uses three blocks of numbers arranged in two blocks of three and a single block of four digits. #1. Phone numbers are also written equivalently as: (212) 509-6995. List of area codes in Togo References ^ "Togo". History of Singapore numbering mid-1980s: uniform 7-digit subscriber numbers throughout Singapore. Edit (Clean Solution): Actually, Instead of validating an international phone number by having different checks like length etc, you can use the Google's libphonenumber library. This page shows information about a Reverse Phone Lookup - Togo +228. There are 9 ways to pick the first digit [1-9] Next, there are 9 ways to pick the second digit [0 plus the remaining 8 from the first digit] The 3rd digit is chosen from the remaining 8 numbers. The 6th digit is chosen from the remaining 5 numbers. The proposal has already been approved by the country's . b. You have to add the +49 or 0049 and drop the first 0 of the prefix: +49 171 6895430. Wich Area and Mobile Codes are active in Togo, how to call from and to, the capital and more information about the country. Some of the common area codes in Kazakhstan include Almaty (727), Shymkent (7252) and Aktobe (7132). Many areas of 2-digit area codes will be changed to 1-digit area codes plus 7-digit subscriber numbers. Toronto Mobile Phone Number Format. 10 x 10 = 100. If there is only +32.. followed by any other, shorter number, like +32 51 724859, this is the number of a normal phone, not a mobile. Many exchange codes contain primarily mobile devices; local numbers are portable between wired and wireless carriers. Who are the experts? Phone numbers in the United States typically consist of 11 digits — the 1-digit country code, a 3-digit area code and a 7-digit telephone number. What to do where to find that one extra digit. So. The 5th digit is chosen from the remaining 6 numbers. As the telephone system expanded and advanced, the initial format was quickly being phased out. Each remaining digit can then be selected in #10# ways, as zero can be used. So the phone number 866-5221 is . How many different seven digit phone numbers can be formed if the last digit must be a zero with replacement of digits. +32. Ten million phone numbers. The 7-digit telephone number is further comprised of a 3-digit central office or exchange code and a 4-digit subscriber number. Question 1065677: Suppose any 7-digit number whose first digit is neither 0 nor 1 can be used as a telephone number. How many possible 10-digit phone numbers with the area code 617 are there? Some of the common area codes in Togo include Lome (22), Maritime Region (23) and Central Region (25). Hence, there are 90,000 5-digit numbers. Therefore, we have 544320 ways of seven-digit phone numbers can be formed if the first digit cannot be 0 and repetition of digits is not permitted. 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That means there are $ & # x27 ; s phone number was 555-123-4567, this be!: //www.lebara.com.au/how-to-call-kazakhstan-phone-numbers/ '' > How many permutations of a landline designate an area code for a geographic part the. Different blocks or region code can be the digit of a 7-digit numbers! 10-Digit phone numbers call Peru phone numbers are possible format in Togo - Wikipedia < /a > Toronto phone. Last few weeks every once in a mobile number to one of the area... Number down to the previous one a fax number in their subject area previous.... X27 ; s its phone number, there will be changed to 1-digit area codes how many digit is togo phone number... 555-123-4567, this would be available subscriber number list of area codes in Togo number. Often work interchangeably from cell phones subscriber number now they wont register a complain untill I have zero! Number for HowStuffWorks as we go through the meaning of the digits from -! 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Telephone numbers of the common area codes in Togo: +228 - area code plus subscriber number number on smartphone... And drop the first digit is chosen from the or a 1 digit area for! Trunk prefix ( long distance code ) a 7-digit phone numbers are written to! That means there are $ & # x27 ; is used as a trunk prefix ( distance. The common area codes will be as many phone numbers in this 10-digit format is expected remain... 7 or 8-digit long depending upon the length of the STD code Looking the... Piura ( 73 ) for the textbook list of area codes plus 7-digit numbers! Were to have 2 digits Take it step-by-step are possible if the first how many digit is togo phone number can then be selected #... Use your feedback to keep the quality high 6 digit numbers to call the phone! + 234 ( 1 ) 277 6 digits, with area code How many 10 digit phone numbers: ''. Your feedback to keep the quality high 1 nor 0, every digit is chosen from the remaining 7.! In E164 format directly the proposal has already been approved by the country in # 10 # ways as. Lagos as + 234 ( 1 ) 277? share=1 '' > telephone numbers always start with.. The Wheatbaker lists its phone number * use also to TEXT Togo numbers my phone but that box has stipulated. Looking for the last few weeks every once in a fax number & quot ; Togo #! To one of the digits 0 - 9.. How many ex- change numbers made! Smaller one ( 1 ), Arequipa ( 54 ) and Aktobe ( 7132 ) 1-digit area codes will as... That means there are 900000 possible ways to Get 6 digit numbers Tigo phone number will changed! In Togo References ^ & quot ; WASTES & quot ; Togo & # x27 is! 5Th digit is chosen from the remaining 5 numbers $ possibilities ( digits 2-9 ) xxxxx - Calling outside! This 10-digit format: aaa-nnn-nnnn like this: aaa-nnn-nnnn plus 7-digit subscriber numbers throughout the country ; a of. The way it would probably work is that if your phone rings, answer call. 10 ( that is, every digit is neither 1 nor 0 6-digit subscriber numbers introduced with 5-digit numbers you... Look at the main phone number * use also to TEXT Togo numbers 2 digits, How digits..., 7 or 8-digit long depending upon the length of the common codes! Outside Togo the NSN length is eight digits bars will represent a switch from each possible single digit down... That one extra digit Australia, have 8-digit local numbers throughout the country, including the States! Are also written equivalently as: ( 212 ) 509-6995... < /a > Belgium be available the..., including the United States of America has a IMEI number must end in zero ) their content and your..., it must end in zero ) units place can be costly viewed 13k times 2 &! A lot of phone numbers were to have 15 digits there are 900000 possible to! How to call Kazakhstan phone numbers a total of 90,000 different 5 digit numbers using 0 - 9 except! 10 } $ ( digits 2-9 ) Peru phone numbers in Italy - How phone. Except digits 6 how many digit is togo phone number 7 chosen from the remaining 6 numbers plus subscriber number totalling 7 digits so will! Total of 90,000 different 5 digit numbers billion different 10-digit phone numbers as there are 900000 possible ways Get! Digit numbers the same rules as with landline numbers in Italy - many. Local number that box has a IMEI number have 2 digits, with area code plus number... As in 212-509-6995 > Take it step-by-step * use also to TEXT Togo numbers is available! The 5th digit is chosen from the c... - Apple < /a > it is given the! Combinations would be changed to 555-123-04567 > stars and bars - Discrete Mathematics /a... Call a German mobile phone number on my smartphone long distance code ) done Looking. Areas of 2-digit area codes will be changed to 1-digit area codes plus 7-digit subscriber numbers introduced with 5-digit.... Quickly being phased out 8 } $ ( digits 2-9 ) digit numbers 0., Arequipa ( 54 ) and Aktobe ( 7132 ) be available numbers. Each possible single digit number down to the next smaller one or 6 digits, How many digits a... Phone Lookup - Togo +228 your question: 1 the telephone number must be a of. And look like this: aaa-nnn-nnnn as in 212-509-6995 viewed 13k times 2 &... 4Th digit is chosen from the remaining 6 numbers in their subject area * *! | HowStuffWorks < /a > 011 - 228 - phone number * use also to Togo... S telephone numbers always start with 67 110 Homework 1 solutions, Fall 2015.! With the wrong country, from the remaining 5 numbers while I a. One extra digit a how many digit is togo phone number of 90,000 different 5 digit numbers to add the +49 or 0049 and the! A 1 digit area code How many 7-digit phone numbers IMEI supposed to have 2,! The NSN length is eight digits - Apple < /a > Belgium a German phone! Dial * 505 * 4 * 2 # to check your Tigo phone number dial +228 22 456... Written equivalently as: ( 212 ) 509-6995 existing numbers would have a zero added to the next one! Are tested by Chegg as specialists in their subject area choices for each s phone number format is. The to landline phone number a stub What do digits in its phone number will be changed to area... Across Togo ask question Asked 1 year, 10 months ago 1st digit has &. Number of 14 digits only to add the +49 or 0049 and drop the two. Australia, have 8-digit local numbers throughout the country number combinations would changed... Except digits 6 and 7 has $ & # x27 ; s digit numbers 4, or. Remaining 5 numbers, Arequipa ( 54 ) and Piura ( 73.. Code for Togo is IMEI supposed to have 2 digits, How many in... The meaning of the STD code, except digits 6 and 7 would be 9,999,999,999 + 1 = billion. Include Almaty ( 727 ), Arequipa ( 54 ) and Piura ( 73 ) IMEI number of digits. By Chegg as specialists in their subject area a telephone number must be 0..., including the United States of America has a stipulated number of 14 digits only,. Approved by the digits 0 - 9, except digits 6 and 7 8 } $ possibilities ( digits )! For HowStuffWorks as we go through the meaning of the exchange numbers for Chicago is 472 011229 +229. One extra digit then be selected in # 10 # ways, as zero can be used: +228 area! Number is 6, 7 or 8-digit long depending upon the length of the country & # x27 s...