3, 5, 11, 14, 17, 21

Answer: Option C

Explanation:

Each of the numbers except 14 is an odd number.

The number '14' is the only EVEN number.

10, 25, 45, 54, 60, 75, 80

8, 27, 64, 100, 125, 216, 343

Answer: Option B

6, 9, 15, 21, 24, 28, 30

Answer: Option A

396, 462, 572, 427, 671, 264