GMAT Question of the Day (Jan 15): Probability and Sentence Correction

Math (PS)

Two sets are defined as follows:

$A = {2, 3, 4, 4, 4}$
$B = {0, 1, 2}$

If a number is taken from set $A$ at random and another number is taken from set $B$ at random, what is the probability that the sum of these numbers is a prime integer?

(A) $\frac{1}{15}$
(B) $\frac{2}{15}$
(C) $\frac{5}{15}$
(D) $\frac{7}{15}$
(E) $\frac{9}{15}$

OA and Explanation

Verbal (SC)

People can debate the aesthetic merits of these overwrought, disquieting, sometimes gruesome works of art, but no one can dispute their creators’ mastery of the paintbrush as a blunt instrument.

(A) but no one can dispute their creators’ mastery of the paintbrush as a blunt instrument.
(B) but none can dispute their creators’ mastery of the paintbrush as a blunt instrument.
(C) but not a one can dispute their creators’ mastery of the paintbrush as a blunt instrument.
(D) but no person can dispute their creators’ mastery of the paintbrush as a blunt instrument.
(E) but none can dispute to their creators’ mastery of the paintbrush as a blunt instrument.

OA and Explanation

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