Select the number from among the given options that can replace the question mark (?) in the following series.

240, 120, ?, 180, 360, 900

Select the number from among the given options that can replace the question mark (?) in the following series.

37, 52, 74, 104, 143, ?

Select the related word/letters/numbers from the alternatives:

01 : 36 : : 02 : ?

A series is given, with one term missing. Choose amongst the given responses the meaningful one:

206, 221, 251, 296, ?, 431

Select the related word/letters/numbers from the given alternatives:

12 : 39 : : 15 : ?

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

4, 9, 16, 25, 36, ?

In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation.

6 x 2 x 9 = 269
8 x 7 x 1 = 781
4 x 1 x 3 = ?

Select the related word/letters/numbers from the given alternatives:

27:125 :: 64:?

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

2, 5, 11, 23, 44, 77, ?

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

31, 32, 36, ?, 61, 86

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

3, 6, 18, ?, 630, 6930

What should come in place of the question mark ‘?’ in the following number series?

60, 40, 50, ?, 180, 460