Verbal Reasoning - Mental Ability Questions

Showing a man on the stage , Rita said , " He is the brother of the daughter of the wife of my husband . How is the man on stage related to Rita ?

In the following question, by using which mathematical operators will the expression become correct?
15 _ 3 _ 4 _ 20

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

isobar, artist, statute, teapot, otters, ?

What number will come in place of ? in the following question?

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

30, 62, 189, 760, ?

In the following question, select the odd number pair from the given alternatives.

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

d_ba_c_a_cb_

Select the missing number from the given responses?