Select the missing number from the given responses.

In the following question, select the number which can be placed at the sign of question mark(?) from the given alternatives.

127, 131, 139, ?, 151, 157, 163, 167, 

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
COT, DQU, ESV, FUW, ?

Which number replaces the question mark?

Find the missing character.

Find the missing number in the given Figure.

In the following diagram find the missing number?