A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

250, 275, 301, ?

A series is given with one term missing. Choose the correct option from the given alternatives and complete the series.
3, 2, 6, 8, 18, 40, 72, 240, ?

What value will come in place of question mark (?) in the number – series given below?

3 42 120 237 393 ?

In the following question, select the missing number from the given series.
2, 5, 12, 27, ?

Find the missing (?) in the series.
14, 28, 42, 56, ? , 84, 98

Select the letter that can replace the question mark (?) in the following series.
X, U, P, M, ?, E

5, 54, 90, 115, 131, 140?

What comes next in the given series?
6C, 10F, 14I, 18L, ?