Verbal Reasoning - Mental Ability Questions

In the following question, select the related letters from the given alternatives.
FS : LY : : IV : ?

Introducing a girl, a boy says, "She is the daughter of my father's only brother­in­law". How is the girl related to the boy?

If 52 % 32 = 40, 22 % 20 = 4 then what is the value of 15 % 11 = ?

The speed of Duranto is more than the speed of Rajdhani. Shatabdi moves faster than Garib Rath but slower than Rajdhani. Which one is the slowest?

In the following question, select the related number from the given alternatives.
7 : 48 : : 11 : ?

Select the related word from the given alternatives.
Spring : Spiral :: Bangle : ?

In a certain code language, “CUDGEL” is written as “FYGKHP”. How is “DAINTY” written in that code language?

In a certain code, 'TEACHER' is written as VGCEJGT. How is 'CHILDREN' written in that code?