2, 3, 3, 5, 10, 13, ?, 43, 172, 177
23
38
39
40
Explanation:
The pattern is + 1, x 1, + 2, x 2, + 3, x 3, + 4, x 4, + 5.So, missing term = 13 x 3 = 39.
The pattern is + 1, x 1, + 2, x 2, + 3, x 3, + 4, x 4, + 5.So, missing term = 13 x 3 = 39.