Source: Official Guide for the GMAT 13th Ed. Problem Solving; #193 Official Guide for the GMAT 2015 14th Ed. Problem Solving; #193

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The probability is 1/2 that a certain

The probability is 1/2 that a certain coin will turn up heads on any given toss. If the coin is to be tossed three times, what is the probability that on at least one of the tosses the coin will turn up tails?

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Mike McGarry, Magoosh Tutor

Dec 28, 2013 • Comment

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