Question

16, 33,65, 131, ... 523
(1) 521
(2) 613
(3) 721
(4) 261
(5) 324​

Answer 1

Answer:

Explanation: Each number is twice the preceding one with 1 added or subtracted alternatively. So, the next number is (2 x 261 + 1) = 523.

ANSWER IS 261.

4) 261