Re: If 100! = 100 x 99 x…x 2 x 1 can be written as 2^a3^b5^c7^d…., what is a?

[GMAT math practice question] If 100! = 100 x 99 x…x 2 x 1 can be written as 2^a3^b5^c7^d…., what is a? A. 86 B. 97 C. 108 D. 119 E. 131 This question is basically asking you the highest power of 2 in 100! To calculate the highest power of a prime p (= 2) in N! (= 100!), we do: \([\frac{N}{p}]+[\fr...