Ask a New Question

how many 7-digit phone numbers

a 7 digit phone number has a 3 digit prefix followed by 4 digits.how many different phone numbers are possible??
1. 2 answers
2. asked by angela
3. 483 views
how many 7-digit phone numbers are possible if the first digit must be non-zero? answer in scientific notation.
1. 3 answers
2. asked by mychelle
3. 524 views
When a telephone exchange is established, there are 10,000 new phone numbersto use(i.e. 722-0000 to 722-9999). Of these 10,000
1. 2 answers
2. asked by Steve
3. 405 views
how many 7 digit phone numbers are possible if the first digit cannot be 0 and the other digits can each be any number from 0
1. 1 answer
2. 13 views
How many different seven digit phone numbers are available if the only restriction is that the first digit cannot be 0.
1. 2 answers
2. asked by Matt
3. 378 views
Find the number of five digit numbers less than 40,000 in which the 33 digit numbers formed by consecutive digits are all
1. 1 answer
2. 40 views
How many phone numbers can be made if all the digits (that is, 10 digits) need to be filled in and any single digit number (0-9)
1. 1 answer
2. asked by anonymous
3. 670 views
Local phone numbers consist of seven numerals, the first three of which are common to many users. A small town's phone numbers
1. 1 answer
2. 128 views
the hundred thousands digit of a six-digit even numbers is 3 more than the thousand digit,which is twice the ones digit.give at
1. 1 answer
2. asked by louie
3. 672 views
Find the sum of all 3-digit positive numbers N that satisfy the condition that the digit sum of N is 3 times the digit sum of
1. 5 answers
2. asked by rohit
3. 1,389 views