A is father of B. O is mother of P. P is the mother of B.

166        156       136      ?      66       16

5, 23, 18, 36, 31, ?

What will come in place of the question mark (?) in the following series?

72, 78, 90, ?, 132, 162

7 7 ? 43 163 831

42, 48, 60, 84, 132, ?

What will come in place of the question mark (?) in the following series?

2, 5, 14, 41, 122, 365, ?

6400, 1600, ?,  80, 16, 4

What will come in place of the question mark (?) in the following series?

32, ?, 30, 46, 28, 44

What will come in place of the question mark (?) in the following series?

92, 153, 220, ?, 364, 443

8         27          64         125       ?         343