GMAT Question of the Day (Apr 30): Geometry and Sentence Correction

Math (DS)

Points A, B, and C lie on a circle of radius 1. What is the area of triangle ABC ?

1. $AB^2 = BC^2 + AC^2$
2. $\angle CAB$ equals 30 degrees

Verbal (SC)

Recent findings lend strong support to the theory that a black hole lies at the center of the Milky Way and of many of the 100 billion other galaxies estimated to exist in the universe.

(A) that a black hole lies at the center of the Milky Way and of
(B) that a black hole lies at the Milky Way’s center and
(C) that there is a black hole lying at the Milky Way’s center an
(D) of a black hole lying at the Milky Way’s center and
(E) of a black hole that lies at the center of the Milky Wayand of

OA and Explanation

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