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With 123 digits you can make 123 one-digit numbers.

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Q: How many 1 digit numbers can make with 123 digits?

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6 if all digits are different, 27 otherwise.

1,956 different numbers can be made from 6 digits. You can calculate this by using the permutation function in a summation function, like this: Σ6k=1 6Pk = 6P1+6P2+...+6P5+6P6 What this does is calculate how many 1 digit numbers you can make from 6 digits, then how many 2 digit numbers can be made from 6 digits and adds the amounts together, then calculates how many 3 digit numbers can be made and adds that on as well etc.

Ten different digits can be used to make 10C4 = 10*9*8*7/(4*3*2*1) = 210 four-digit numbers. Either numbers starting with 0 are permitted or the 10 digits do not contain a 0.

4! = 24 ■

7 two-digit numbers.

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There are 5460 five digit numbers with a digit sum of 22.

6 if all digits are different, 27 otherwise.

1,956 different numbers can be made from 6 digits. You can calculate this by using the permutation function in a summation function, like this: Σ6k=1 6Pk = 6P1+6P2+...+6P5+6P6 What this does is calculate how many 1 digit numbers you can make from 6 digits, then how many 2 digit numbers can be made from 6 digits and adds the amounts together, then calculates how many 3 digit numbers can be made and adds that on as well etc.

u culd make 80

9

Ten different digits can be used to make 10C4 = 10*9*8*7/(4*3*2*1) = 210 four-digit numbers. Either numbers starting with 0 are permitted or the 10 digits do not contain a 0.

5040 different 4 digit numbers can be formed with the digits 123456789. This is assuming that no digits are repeated with each combination.

27 three digit numbers from the digits 3, 5, 7 including repetitions.

You can make 4*4*4 = 64 numbers.

If you want 4-digit numbers, there are 24 of them.

4! = 24 ■

There are 90000 5-digit numbers.