Verbal Reasoning - Mental Ability Questions

Introducing a man, a woman says, "His son's mother is the only daughter of my mother". How is the man related to the woman?

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

Rearrange the jumbled letters to make a meaningful word and then select the one which is different.

If I=9 and SLIP=56, then FALL= ?

In a certain code language "CANADA" is written as "BZMBEB". How is "SYDNEY" written in that code language?

If 16α1 = 8, 14α6 = 42 and 12α5 = 30, then find the value of 2α6 = ?

Select the related number from the given alternatives.
12.5 : 6.25 :: 7 : ?

Neeraj is facing north, then he turns 45 degree right and goes 25 m, then turns in south-east direction to move 25 m and from there 25 m to east. In which direction/place is he from his original place?