Which number will replace the question mark (?) in the following series?
27, 125, ?, 729, 1331, 2197

Correct option is C

Given: The series is: 27, 125, ?, 729, 1331, 2197

Concept: 3³,5³,7³,……… pattern follows.

Explanation:

3³=27

5³=125

7³=343

9³=729

11³=1331

13³=2197

So, missing number=343

Thus, correct option is (c).