Q. 5, 6, 9, 15, ?, 40
✅ Correct Answer: (B)
25
Explanation: The pattern is + 1, + 3, + 6,....., i.e. + 1, + (1, + 2), + (1 + 2 + 3),.....
Explanation by: Kiran Rapria
The pattern is + 1, + 3, + 6,....., i.e. + 1, + (1, + 2), + (1 + 2 + 3),.....