Select the number that can replace the question mark (?) in the following series. 

Find the missing number by analysing the pattern followed by the numbers in each row.

Find the missing number.

. 

Find the missing number.

Find the missing term:

In each of the following questions, select the related number from the given alternatives:

8/15 : 2/5 : : 16/21 : ?

What will come in the place of question mark?

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

4, 21, 86, 261, 526, ?

Study the given pattern carefully and select the number that can replace the question mark [?] in it.

First row: 6, 5, 191

Find the missing number from the given responses.

3       5       7

4       6       8

5       7       9