GMAT Question of the Day (Oct 18): Arithmetic and Sentence Correction

By - Oct 18, 02:00 AM Comments [0]

Math (PS)

A perfect number is defined as one for which the sum of all the unique factors less the number itself equals to the number. For instance, 6 is a perfect number, because the factors of 6 (apart from 6 itself) are 1, 2 and 3, and 1 + 2 + 3 = 6 . Which of the following is also a perfect number?

(A) 12
(B) 20
(C) 28
(D) 48
(E) 60

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

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Verbal (SC)

Shipwrecks are more likely to be found undisturbed at great depths than in shallow coastal waters, which exposes archaeological remains to turbulence and makes them accessible to anyone in scuba gear, whether they be archaeologist, treasure hunter, or sport diver.

(A) than in shallow coastal waters, which exposes archaeological remains to turbulence and makes them accessible to anyone in scuba gear, whether they be
(B) than in shallow coastal waters, where archaeological remains are exposed to turbulence and are accessible to anyone in scuba gear, whether
(C) as opposed to shallow waters along the coast, where archaeological remains are exposed to turbulence and accessible to anyone in scuba gear, including
(D) instead of in shallow waters along the coast, which exposes archaeological remains to turbulence and making them accessible to anyone in scuba gear, including an
(E) instead of shallow coastal waters, because it exposes archaeological remains to turbulence and make them accessible to anyone in scuba gear, whether

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

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