If k is a positive even integer, then (k + 1)(k + 2) could equal which of the following?

(A) 10
(B) 20
(C) 30
(D) 40
(E) 50

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Answer:

Choice C
Level of difficulty 1 2 3 4 5

The set of positive even integers is {2, 4, 6, ...}. Starting with 2, we get (3)(4) = 12 as an answer which does not match any of the choices. Trying 4, we get (5)(6) = 30, or choice C.

For more practice with even integer and similar problems, go to Skill Set 27: Odd/Even Numbers.

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