Which zone separates the crust and

What will come in the place of questions (?) mark in the following questions.

1204, 1218, ? , 1267, 1302, 1344

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

2, 5, 11, 23, 47, ?

1056        264        132         33        ?         4.125

25     25     37.5     ?     328.125     1804.6875

152        142       122      ?      52       2

70, 95, 145, ?, 320, 445

7      4      5      9      20       ?       160.5

What should come in place of (?) question mark in the following number series.

7, 14, 30, 66, 146, ?

Find the missing term:

2, 6, 15, 31, 56, ?

? , 864, 432, 144, 36, 7.2