Question

2, 3, 3, 5, 10, 13, ?, 43, 172, 177
A.23
B.38
C.39
D.40

Answer 1

The Answer is...

C.39

The pattern is + 1, x 1, + 2, x 2, + 3, x 3, + 4, x 4, + 5.
So, missing term = 13 x 3 = 39.

Answer 2

The and is 39
2+1=3×1=3+2=5×2=10+3=13×3=39+4=43×4=172+5=177