'गुरु के समीप रहकर

In each of the following series, one term is missing. Find the missing term.

5, 13, 29, 61, 125, ?

What value should come in the place of (?) in the following number series?

4, 10, 22, 46, ?, 190

14       36       80       168       ?       696

500, 250, 750, 375, 1125, 562.5, ?

8, 27, 53, ?, 161, 285

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

2.5, 6.5, 18.5, 54.5, 162.5, 486.5, ?

64, 32, ? , 48, 96, 240

18, 54, ? , 1890, 17010, 187110

18,  37,  60, ?,  120,  157

2, 2, 6, 30, ?, 1890