What should come in place ofthe question mark (?) in the given series?
5 ,15, 45, 135 ,405 ,?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 1215.
Given series: 5 ,15, 45, 135, 405, ?
5 × 3 = 15, 15 × 3 = 45, 45 × 3 = 135, 135 × 3 = 405, 405 × 3 = 1215