HappyQuakka wrote:
If n is an even integer and <n> denotes that the product of all the positive integers to n. For example, <n> = 2 * 4 * 6 * 8 * .... * n. What is the greatest prime factor of <20> + <22>?
A. 19
B. 21
C. 23
D. 27
E. 31
Got this question from my offline GMAT prep course I signed up for last week.. Can anybody help me actually solve this problem please??
Also, how can I tag this post properly?
<20> + <22> = <20> (1 + 22) = <20> * 23
C
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