Question

Which situation will have the greatest number of permutations?
A.
The number of license plates with 4 letters followed by 3 numbers, where letters and digits cannot be repeated.
B.
The number of license plates with 3 letters followed by 4 numbers, where letters and digits cannot be repeated.
C.
The number of license plates with 4 letters followed by 3 numbers, where letters and digits can be repeated.
D.
The number of license plates with 3 letters followed by 4 numbers, where letters and digits can be repeated.

Answer 1

there are more letters (26) than one digit numbers (10) so the one with the most letters

Answer 2

also more if repetition is allowed
as usual, the answer is C

Answer 3

Thanks :)

Answer 4

yw