Question

the ans. is 24.can anyone please upload the solution of this question.

Answer 1

it must be divisible by 24 because if we take n=1 then we get 5n-1=24 which is divisible by only 24 and 4. now if we take n=2 then we get 624 which is too divisible both 24 and 4 but when we go further with n=3 we get 15624 which is divisible by 4 but not by 24.
hence ans.=4
please my ans. as the brainiest