[A]. 1
[B]. 9
[C]. 20
[D]. 49
✅ The correct answer is option C.
The pattern is 12, 22, 32, 42, 52, 62, 72. But, instead of 52, it is 20 which to be turned out.
The pattern is 12, 22, 32, 42, 52, 62, 72. But, instead of 52, it is 20 which to be turned out.