GMAT Question of the Day (February 10)

Math

Comet A is seen near the Earth every 12 years while Comet B every 20 years. If both comets were observed in 1979, for how many years do we have to wait to see the two comets together again? (Assume now is 2004)

A. 16
B. 20
C. 25
D. 32
E. 35

Verbal

A system that combines radar and infrared can be installed in cargo ships and passenger liners to provide a ship’s crew with a warning if another vessel is in the shipping lane directly ahead. The early warning allows a ship’s captain to attempt an abrupt course change to avert a possible collision. Even though cargo ships and passenger liners need a considerable distance to maneuver and that most warnings are false, such an early warning system undoubtedly better protects cargo and passengers. Which one of the following, if true, most strengthens the argument?

A. The system can detect not only the physical presence of a ship by radar but it can also detect a ship's heat signature by infrared.

B. A maritime safety commission report determined that over 82% of the system’s warnings were false.

C. Ship collisions in the major oceanic shipping lanes are extremely rare.

D. The risk of a cargo ship or passenger liner being involved in a collision is substantially greater at port than at sea.

E. Abrupt course changes do not involve risk to a ship’s cargo or passengers.

Question Discussion & Explanation

Correct Answer - E - (click and drag your mouse to see the answer)

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