For any positive integer n, the length of n is defined as the number of prime factors

For any positive integer n, the length of n is defined as the number of prime factors whose product is n. For example, the length of 75 is 3, since 75 = 3 x5x5. How many two digit positive integers have length 6?

A)None

B)One

C)Two

D)Three

E)Four

Smallest Number can be – 2^6.

Next highest number – 2^5 * 3

Next highest             - 2^4 * 3^2……. Not possible as it’s a 3 digit number….

Ans : C