Multiple choice

If X is an integer, which of the following is an odd integer?

  1. X + 5

  2. 2X2 + 3

  3. 2X2 + 5X

  4. 3X2 + 2

  5. X2 + X + 2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Assume X as 3. Then (1) = 8, (2) = 21, (3) = 33, (4) = 29 and (5) = 14. So (1) and (5) is not the answer. Let take X = 2 then (2) = 11, (3) = 18, and (4) = 14. Only choice (2) is odd in both cases.

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