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.

Problem Solving Questions | Data Sufficiency Questions
Sentence Correction Questions | Critical Reasoning Questions | Reading Comprehension Questions

rss GMAT Practice Question (One of Hundreds)
f(x) = -5x197-8x248+1; f(-1) = ?
Correct Answer: C
Determine patterns for raising -1 to different powers.
  1. To determine f(-1), we must first know (-1)197 and (-1)248. You should never multiply out lots of numbers.
  2. Instead, look for a pattern:
    (-1)1=-1
    (-1)2=+1
    (-1)3=-1
    (-1)4=+1
    ...
    (-1)(odd number)=-1
    (-1)(even number)=+1
  3. This means (-1)197=-1 since 197 is odd and (-1)248=+1 since 248 is even.
  4. This pattern simplifies the equation to:
    -5(-1) - 8(1) + 1, which equals 5 - 8 + 1, or -2.
    Thus, C is the correct answer.

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.