Verbal Reasoning - Mental Ability Questions

Select the missing number from the given responses:

Select the missing number from the given responses?

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

AN, CQ, ET, ?, IZ

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

BDG, KMP, TVY, ?

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

7, 13, 21, 31, 43, 57, ?

Choose the pair which is related in the same way as the words in the first pair from the given choices.

DOG : KENNEL :: BEE : ___

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

AT, CR, FO, JK, ?

If the signs + and / and the numbers 2 and 4 are interchanged, which one of the following four equations would be correct?