Verbal Reasoning - Mental Ability Questions

Aryan has a brother named Bishnu. Aryan is the son of Chetan. Dev is Chetan's father. In term of relationship, what is Bishnu of Dev?

In a row of boys, Rahul is 19th from top and Ajay is 21st from bottom. They interchange their position. Ajay now becomes 28th from bottom. Howmany total boys are there in the row?

Introducing a boy, Sia says, "He is the grandson of my father. I have no siblings." How is Sia is related to the boy?

Introducing a boy, Amar said, "He is the son of my maternal grandfather's son." How is that boy related to Amar?

A, B, C,D and E are standing in a row. D is the immediate neighbour of A and E. B is at the right of E and C is in the extreme right. Who is fourth to the left of C?

If V is the brother of U, U is the sister of W and X is the husband of U, then U is V's

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

AHF, FMK, KRP, ?, UBZ

If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then 81 x 9 + 10 – 6 ÷ 5 = ?