Who did Pankaj Advani defeat to win his 28th World

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

21, 36, 66, 126, ?, 486

10,14,26,42,70,?

81, 41, 42, 64.5, ?, 330

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

5, 14, 41, 122, 365, 1094, ?

1500     150      30      ?      3.6       1.8

Find the missing number in the series:

7, 21, 19, 57, 55, ?

71, 79, 88, 152, ?, 393

1        1        4         ?        280         3640

3, 10, 29, 66, ?

Find the missing number in the given number series.

 1165, ?, 1040, 985, 935, 890