Which of the following numbers will replace the question mark (?) in the given series?
1, 3, 6, 18, 36, 108,?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 216.
The series follows this pattern:
1 × 3 = 3, 3 × 2 = 6, 6 × 3 = 18, 18 × 2 = 36, 36 × 3 = 108, 108 × 2 = 216