Total number of two digit number n What is the value of n such that `(3^n+7^n)` is divisible by 10

The total number of two digit numbers ' n ,such that 3^(n)+7^(n) is a multiple of 10 ,is

What is the smallest natural number n such that n! is divisible by 990

If n in N , then 3^(2n)+7 is divisible by

For what least value of 'n, a natural number (24)^(n) is divisible by 8 ?

Find the number of ordered pairs (m,n)epsilon {1,2,…..20} such that 3^(m)+7^(n) is divisible by 10.

For what least value of n where n is a natural number 5^n is divisible by 3?

If M is even prime number,N is least prime number of two digits & P is greatest prime number of two digits, then (P+N)/(M) is dividible by-