# Practice GMAT Questions

We provide hundreds of world-class practice GMAT questions with detailed explanations, study guides, and a GMAT practice test for free so that anyone can succeed on the GMAT.

Sentence Correction Questions | Critical Reasoning Questions | Reading Comprehension Questions

**D**

- In order to find how many integers are in set M, it may help to start listing the contents of both sets to try to identify a pattern:

K = {2, 4, 6, 8, ...}

M = {1.41, 2.00, 2.45, 2.83, ...} - We see that K is the set of even integers from 2 to 40 and M is the set of the square roots of each number in K. Conversely, given the set M, K is the set of squares of numbers in M.
- To see if a certain integer is in M, we can check to see if its square is in K. In other words, we are looking for positive integers x, such that x
^{2}is an even perfect square less than 40. - Listing the perfect squares in K from 1 to 40 yields:

1, 4, 9, 16, 25, and 36. - Eliminating any odd numbers that would not be included in K leaves us with 4, 16, and 36.
- This means that the integers 2, 4, and 6 are included in M since 2
^{2}=4, 4^{2}=16, and 6^{2}=36. No negative values are in M because square roots are always positive. This is an exhaustive list of the integers in M; thus the answer is 3, which is choice D.

## Practice Math Questions

## Practice Verbal Questions

The best way to achieve a good score on the GMAT is to master the content tested on the GMAT and practice it extensively. We sincerely believe anybody can score a 700 or higher with enough practice and study of the content tested by the GMAT. In order to help you achieve a high score, we are pleased to provide you with a series of high-quality GMAT sample questions and detailed explanations for free. Written by our staff, these questions have helped countless students achieve a top score. In addition, we provide a daily GMAT practice question RSS feed.