GMAT Question of the Day

November 15, 2013

 

 

Every weekday, GMAT Hacks publishes a realistic GMAT practice question. In general, you'll see Quant problems on Monday, Wednesday, and Friday, and Verbal questions on Tuesday and Thursday. You'll always be able to find them at www.gmathacks.com/daily.

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Today's Practice GMAT Question:

The probability is 1/2 that a certain coin will turn up heads on any given toss. If the coin is to be tossed four times, what is the probability that on at least one of the tosses the coin will turn up tails?
(A) 1/16
(B) 1/8
(C) 1/2
(D) 7/8
(E) 15/16


 

Click to show answer (opens in new window)

 

Need more work in this area? Check out the Arithmetic: Challenge set of (100) practice problems.There is also a full chapter covering Probability in Total GMAT Math. It includes additional practice problems, as well.

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About the author: Jeff Sackmann has written many GMAT preparation books, including the popular Total GMAT Math, Total GMAT Verbal, and GMAT 111. He has also created explanations for problems in The Official Guide, as well as 1,800 practice GMAT math questions.

Total GMAT Math

The comprehensive guide to the GMAT Quant section. It's "far and away the best study material available," including over 300 realistic practice questions and more than 500 exercises!
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