# GMAT Question of the Day (Jan 11): Combinations and Sentence Correction

- Jan 11, 02:00 AM Comments [0]

Math (PS)

4 professors and 6 students are being considered for membership on a supervisory committee which must consist of 3 people. In how many ways can this committee be formed if it has to include at least 1 professor?

(A) 36
(B) 60
(C) 72
(D) 80
(E) 100

OA and Explanation

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Verbal (SC)

Rivaling the pyramids of Egypt or even the ancient cities of the Maya as an achievement, the army of terra-cotta warriors created to protect Qin Shi Huang, China’s first emperor, in his afterlife is more than 2,000 years old and took 700,000 artisans more than 36 years to complete them.

(A) took 700,000 artisans more than 36 years to complete them
(B) took 700,000 artisans more than 36 years to complete it
(C) took 700,000 artisans more than 36 years to complete
(D) 700,000 artisans took more than 36 years to complete
(E) to complete them too 700,000 artisans more than 36 years

OA and Explanation