0000, 0001, 0002, ...., 9997, 9998, 9999
If every number can be used as many times as you like, there are 104 = 10000 different combinations. If each number can only be used once, there are 9!/(9 - 4)! = 5040 combinations.
there are 10000
every number from 0000 to 9999
10000 ; This may look to be wrong but you can have 0001 to 9999 which gives you 9999 different combinations of 4 digits, plus another one for 0000.
0000, 0001, 0002, ...., 9997, 9998, 9999
If every number can be used as many times as you like, there are 104 = 10000 different combinations. If each number can only be used once, there are 9!/(9 - 4)! = 5040 combinations.
there are 10000
Number of 7 digit combinations out of the 10 one-digit numbers = 120.
every number from 0000 to 9999
The smallest, positive 5-digit whole number is 10,000
There are 126 different 5 digit combinations. Note that the combination 12345 is the same as the combination 45312.
This question needs clarificatioh. There are 4 one digit number combinations, 16 two digit combinations, ... 4 raised to the n power for n digit combinations.
10000 ; This may look to be wrong but you can have 0001 to 9999 which gives you 9999 different combinations of 4 digits, plus another one for 0000.
01234 is, technically a 4-digit number. Also, 10234 is not the smallest 5 digit number. The smallest 5 digit [positive] number is 10000.
Digit 4
To calculate the number of different 4-digit combinations that can be made using numbers 0 through 9, we use the concept of permutations. Since repetition is allowed, we use the formula for permutations with repetition, which is n^r, where n is the number of options for each digit (10 in this case) and r is the number of digits (4 in this case). Therefore, the number of different 4-digit combinations that can be made using numbers 0 through 9 is 10^4, which equals 10,000 combinations.