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What are all the possible four digit codes using the numbers 0 through 9?
Wiki User
∙ 13y ago
Each digit can be one of ten so the possiblilities are 10 x 10 x 10 x 10 ie 10,000, (assuming 0000 is included). Not to actually list 10000 numbers here, but it would go like this:
0000, 0001, 0002, 0003, 0004, 0005, ...., 9996, 9997, 9998, 9999
Wiki User
∙ 13y ago
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How many three-digit area codes are possible if the first digit cannot be a 0?
There are 900 possible three-digit numbers not beginning with 0. (Note, however, that this question does not accurately describe the restrictions on numbers that can be used as area codes.)
How many 3 digit codes using 0 through 9 are possible if repetITIONS are allowed?
1,000 of them. The list of possibilities will look exactly like the counting numbers from 000 to 999 .
How many different 4-digit codes are possible if the last digit has to be zero?
There can be 103 = 1000 codes.
How many different 5 digit zip codes are possible if digits are allowed to repeated?
As far as I can tell, all 5 digit numbers are potential zip codes, so there are 99999 + 1 potential zip codes, or 100,000. Many of these are not actually is use.
How many different 4-digit codes are possible if the digits cannot be repeated?
If you include 0000, ten thousand unique four digit codes are possible.
How many three-digit area codes are possible if the first digit cannot be a 0?
There are 900 possible three-digit numbers not beginning with 0. (Note, however, that this question does not accurately describe the restrictions on numbers that can be used as area codes.)
How many phone numbers are possible in a city with two area codes?
In the North American system with 3-digit area codes and 7-digit local numbers, there are slightly less than 8 million possible telephone numbers per area code, so with two area codes you have more than 15 million possible numbers. However, only a fraction of those numbers will be in use at any given time.
How many 3 digit codes using 0 through 9 are possible if repetITIONS are allowed?
1,000 of them. The list of possibilities will look exactly like the counting numbers from 000 to 999 .
How many different 4-digit codes are possible if the last digit has to be zero?
There can be 103 = 1000 codes.
What is the least possible sum of two 4-digit numbers?
what is the least possible sum of two 4-digit numbers?what is the least possible sum of two 4-digit numbers?
How many 3-digit codes using digits 0 through 9 are possible if repetitions are allowed?
10,000
How many different 5 digit zip codes are possible if digits are allowed to repeated?
As far as I can tell, all 5 digit numbers are potential zip codes, so there are 99999 + 1 potential zip codes, or 100,000. Many of these are not actually is use.
How many possible 4 digit combinations are there using 0-9. how many different combination codes are possible?
There are 210 4 digit combinations and 5040 different 4 digit codes.
How many different 4-digit codes are possible if the digits cannot be repeated?
If you include 0000, ten thousand unique four digit codes are possible.
What are all the possible 5 digit codes using the numbers 0-9?
There are 10000 such codes. Each of the numbers 0-9 can be in the first position. With each such first digit, each of the numbers 0-9 can be in the second position. With each such pair of the first two digits, each of the numbers 0-9 can be in the third position. etc.
How many area codes were possible before 1995?
Prior to 1995, all area codes in North America (USA, Canada, etc.) had the first digit 2 through 9, the middle digit 0 or 1, and the last digit 0 through 9, but the second and third digits could not be 00 or 11. That made a total of 8x2x9 = 144 possible geographic area codes. The 8 N00 codes were reserved for non-geographic special purposes (800 toll-free, 900 premium numbers, 700 special per-carrier numbers, and 500 personal numbers). The 8 N11 codes were reserved to prevent confusion with the special codes like 911 emergency. Beginning in 1995, the middle digit could be any number from 0 through 8, but area codes with 9 as the middle digit are still reserved for future expansion. There are now 648 possible geographic area codes, give or take a few special cases.
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
