Question

If A + B means A is wife of B; A - B means A is son of B; and A = B means A is sister of B.
Following this relationship,
Pankaj - Rajinder = Rahul
will certainly mean all of these except
(A) Rajinder is a lady
(B) Pankaj is son of Rajinder
(C) Rahul is father of Pankaj
(D) None of these
daitheoire hoortoin common​

Answer 1

Pankaj is rajinder's son.

Answer is (B)

Answer 2

Given :

A + B means A is wife of B

A - B means A is son of B

A = B means A is sister of B

Solution :

Pankaj - Rajinder = Rahul

Pankaj - Rajinder → Pankaj is son of Rajinder

Rajinder = Rahul → Rajinder is sister of Rahul

From the above relations we can conclude that :

1. Rajinder is a lady
2. Pankaj is son of Rajinder
3. Rajinder is sister of Rahul

So, we can say that Option A and Option B are true.

We have concluded that Rajinder is sister of Rahul. So Rahul cannot be the father of Pankaj.

So, we can say that Option C is false.