Identify the figure given in the options which when put

30           162         344         ?              890         1270

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

121, 110, 97, ?, 61, 38

Which of the following numbers will replace the question mark (?) in the given series?

17, 30, 44, 59, 75, ?

1, 7, 37, 187, 937, ?

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

4, 9, 16, 25, 36, ?

5, 23, 18, 36, 31, ?

252, 235, 220, 207, 196, ?

48      49       45      54       ?       63       27

30, 43, 58, 75, 94, ?

7 7 28 252 ?