3 years ago

How many possible combinations of 4 numbers 1-9?

1 answer:

5 0

1. There are 10, 000 combinations, you have 10 choices for the four digit and there are 10 x 10 x 10 x 10 which is 4-digit combination from 1-9. This is called combinations; the calculation comes out to 10^4.

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