# GMAT Question of the Day (Feb 20): Probability and Critical Reasoning

- Feb 20, 02:00 AM Comments [0]

Math (PS)

In preparation for the Olympics, a group of five women is participating in a 400 meter race. What is the probability that either Jenny or Sally will win this race?

(A) $\frac{1}{5}$
(B) $\frac{4}{15}$
(C) $\frac{2}{5}$
(D) $\frac{1}{2}$
(E) $\frac{3}{5}$

Question Discussion & Explanation

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Verbal (CR)

Columnist: Almost anyone can be an expert, for there are no official guidelines determining what an expert must know. Anybody who manages to convince some people of his or her qualifications in an area—whatever those may be—is an expert.

The columnist’s conclusion follows logically if which one of the following is assumed?

(A) Almost anyone can convince some people of his or her qualifications in some area.
(B) Some experts convince everyone of their qualification in almost every area.
(C) Convincing certain people that one is qualified in an area requires that one actually be qualified in that area.
(D) Every expert has convinced some people of his or her qualifications in some area.
(E) Some people manage to convince almost everyone of their qualifications in one or more areas.

Question Discussion & Explanation

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