Question #12087

how many 4 digits numbers can we make using the digits 3,6,7 and 8 without repetitions?

Expert's answer

3, 6, 7 and 8 are different and non-zero so we can make 4!

numbers.

3678

3687

3768

3786

3867

3876

.......

8763

4!

= 1*2*3*4 = 24

numbers.

3678

3687

3768

3786

3867

3876

.......

8763

4!

= 1*2*3*4 = 24

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