" (21) If "n" is a natural number,then "9^(2n)-4^(2n)" is always divisible by "

If n is a natural numbers then 25^(2n)-9^(2n) is always divisible by

If n is a natural number, then (4^(n) -3n -1) is always divisible by-

If n is a natural number, then 9^(2n)-4^(2n) is always divisible by (a) 5 (b) 13 (c) both 5 and 13 (d) none of these

If n is a natural number ,then 9^(2n)-4^(2n) is always divisible by a)5 b)13 c)both 5 and 13 d)None of these

If n is a natural number,then 9^(2n)-4^(2n) is always divisible by 5 (b) 13 (c) both 5 and 13 (d) none of these

If n is any natural number then n^(2)(n^(2)-1) is always divisible

If n is an odd natural number 3^(2n)+2^(2n) is always divisible by

If n is natural number & n ge 1, then (3^(2n) - 1) is always divisible by

In n is a natural number,n(n + 1)(n + 2) will always divisible by