Verbal Reasoning - Mental Ability Questions

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

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.AK12, GV29, LF18, PO?

If 8 θ 12 δ 6 = 60 and 13 θ 15 δ 11 = 74, then 18 θ 21 δ 15 = ?

Introducing a woman, a boy says, "She is the wife of my grandfather's son". How is the woman related to the boy?

Pointing towards a boy, a girl says, "He is the only son of my mother's brother". How is the girl related to the boy ?

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

XXXXXO, XXXXOX, XXXOXX, XXOXXX, XOXXXX, ?

Select the odd number from the given alternatives.

Bommy is the daughter of Indu's brother. Indu has one sister, Chanda and one brother , Gopal. How is Bommy related to Gopal?