Which of the following expressions yields an even integer for every integer value of n?

Correct answer marked below

A

n^2 - 2n + 6

B

n^2 + 4n - 6

C

3n^2 + 2n + 2

2n^2 + 4n + 8

Correct

E

5n^2 - 2n + 2

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S

SanjayJul 14, 2024

Great

N

NandhuMar 3, 2024

Thank you very much!

What this question tests

Your command of divisibility, primes, factors, parity, and how the GMAT tests properties of integers.

Forgetting that 1 is not prime, that 0 is divisible by every integer, or that negative numbers flip your assumptions.

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