Verbal Reasoning - Mental Ability Questions

Some equations have been solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis. If 98-39-27=31, 87-38-34=20, then 79-25-12 = ?

If CHANTED is coded as ZEXKQBA, then how will MAY be coded as?

A boy and a girl are playing in a park. The only daughter of the maternal grandfather of the girl, is the sister of the boy's father. How is the boy related to the girl?

14 notebooks of a class were corrected with ink pen while 22 notebooks were corrected with colour pencil. If 4 notebooks were corrected with both, what is the strength of class?

In a certain code, if DOG is written as 4157, then what will MAT be written as ?

Select the related number from the given alternatives.
7.25 : 7.75 :: 9 : ?

Rampal told Arjun, "Yesterday I defeated the only brother of the daughter of my grandmother." Whom did Rampal defeat?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series. ? , Kerosene, Diesel, Fuel oil