0
How many 7 digit phone numbers can be formed if all the numbers can be repeated?
Wiki User
∙ 14y ago
823543
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
How many 7-digit phone numbers can be formed if the first digit cannot be 0 or 1 and no number can be repeated?
There are 8*9*8*7*6*5*4 = 483840 numbers.
How many 7 digit phone numbers can be formed if the first digit cannot be 0 or 1 and any digit can be repeated?
Using your rule - essentially, it's the simplified sum of 9999999-2000000 which is a total of 7999999 numbers !
How many 7-digit phone numbers can be formed if the first digit cannot be 0 and any digit can be repeated?
7
How many 7-digit phone numbers can be formed if the first digit cannot be 0 or 1 and any digit can be repeated?
The first digit can be formed in 8 ways (excluding 0 and 1). The rest of the 6 digits each can be filled in 10 ways. The total number of digits, therefore is 8 x 10^6.
What is the probability that a seven-digit phone number has one or more repeated digits?
Assuming all digits are equally likely, then it is 0.9395.However, that assumption is flawed since some numbers begin with 0. Some sequences are reserved and so on. So the distribution of numbers is NOT truly random and the above answer depends on all seven digit numbers being equally likely..
How many 7-digit phone numbers can be formed if the first digit cannot be 0 or 1 and no number can be repeated?
There are 8*9*8*7*6*5*4 = 483840 numbers.
How many 7 digit phone numbers can be formed if the first digit cannot be 0 or 1 and any digit can be repeated?
Using your rule - essentially, it's the simplified sum of 9999999-2000000 which is a total of 7999999 numbers !
How many 7-digit phone numbers can be formed if the first digit cannot be 0 and any digit can be repeated?
7
How many 7-digit phone numbers can be formed if the first digit cannot be 0 or 1 and any digit can be repeated?
The first digit can be formed in 8 ways (excluding 0 and 1). The rest of the 6 digits each can be filled in 10 ways. The total number of digits, therefore is 8 x 10^6.
What are Texas workforce phone numbers?
10 digit numbers
How many 10 digit phone numbers are possible?
Without restrictions, it was would numbers 000-000-0000 through 999-999-9999. So that would be 9,999,999,999 + 1 = 10 billion different 10-digit phone numbers. Ex: If there existed single digit phone numbers, there would be 10, because the digits are 0 through 9. If there existed only double digit phone numbers, then it would be 00 through 99 which would be 100 total two-digit numbers. Therefore the total possible combinations for an X digit phone number would be: 10^X
What is a 4-digit pin?
A 4 digit pin is the last four numbers in your phone number.
What is the probability that a seven-digit phone number has one or more repeated digits?
Assuming all digits are equally likely, then it is 0.9395.However, that assumption is flawed since some numbers begin with 0. Some sequences are reserved and so on. So the distribution of numbers is NOT truly random and the above answer depends on all seven digit numbers being equally likely..
What is a 4 digit pin?
A 4 digit pin is the last four numbers in your phone number.
What do residential phone numbers have in common in Singapore?
The first digit: 6
When did South Australia use 6 digit phone numbers?
2020
Do all phone numbers end in a odd digit?
No, my second to last phone number ended in 3836.
