GMAT Question of the Day (Dec 28): Probability and Sentence Correction

By - Dec 28, 03:00 AM Comments [0]

Math (PS)

Set S consists of all prime integers less than 10. If two numbers are chosen form set S at random, what is the probability that the product of these numbers will be greater than the product of the numbers which were not chosen?

(A) \frac{1}{3}
(B) \frac{2}{3}
(C) \frac{1}{2}
(D) \frac{7}{10}
(E) \frac{4}{5}

OA and Explanation

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Verbal (SC)

The sudden outbreak of a devastating disease that has not been reported before and which is unknown in cause is a rarity in modern medicine.

A) which is unknown in cause
B) whose cause is unknown
C) is unknown as to its cause
D) with a cause that is unknown
E) unknown in cause

OA and Explanation

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