Published: January 5, 2011
GMAT Tip: GMAT Math Strategy – Think with your pen
Today’s GMAT Tip comes from our friends at Knewton. In this post, they provide helpful hints on how to tackle particularly complex math problems. Read on to see what they have to say!
Here is a rather challenging GMAT math problem. Give it a shot:
For every positive EVEN integer n, the function h(n) is defined to be the product of all the even integers from 2 to n, inclusive. If p is the smallest prime factor of h(100) + 1, then p is
(A) between 2 and 10
(B) between 10 and 20
(C) between 20 and 30
(D) between 30 and 40
(E) greater than 40
So, where do you start?
It is difficult to figure out how to approach a question like this one, since it’s a mix of so many different concepts: properties of even numbers, prime numbers, factors, and functions. No one wants to see a complex question like this on the GMAT, especially when you’re struggling to keep up your pace and finish the section on time.
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