Which of the following numbers will replace the question mark (?) in the given series?
5, 3,20,9,80,27,320,?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3, i.e., 81.
5 4 = 20, 20 4 = 80, 80 4 =320
3 3 =9, 9 3 =27, 27 3 = 81