GRE Question of the Day (February 13)

Math

Eight points are equally spaced on a circle. If 4 of the 8 points are to be chosen at random, what is the probability that a quadrilateral having the 4 points chosen as vertices will be a square?

 A \({\frac{{1}}{{70}}}\)

 B \({\frac{{1}}{{35}}}\)

 C \({\frac{{1}}{{7}}}\)

 D \({\frac{{1}}{{4}}}\)

 E \({\frac{{1}}{{2}}}\)

Question Discussion & Explanation
Correct Answer - B - (click and drag your mouse to see the answer)

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