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GMAT Club

Math: GMAT Club Test m15, q31; Verbal (SC): “National study about microcomputers” by crackgmat750

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Math

John throws a coin until a series of three consecutive heads or three consecutive tails appears. What is the probability that the game will end after the fourth throw?
(A) \frac{1}{16}
(B) \frac{2}{16}
(C) \frac{3}{16}
(D) \frac{4}{16}
(E) \frac{6}{16}

OA and discussion

Verbal (SC)

A recent national study of the public schools shows that there are now one microcomputer for every thirty-two pupils, four times as many than there were four years ago.

(A) there are now one microcomputer for every thirty-two pupils, four times as many than there were
(B) there is now one microcomputer for every thirty-two pupils, four times as many than there were
(C) there is now one microcomputer for every thirty-two pupils, four times as many as there were
(D) every thirty-two pupils now have one microcomputer, four times as many than there were
(E) every thirty-two pupils now has one microcomputer, four times as many as

OA and discussion