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Question:

Read the following information to answer the question that follows.

P – Q means Q is father of P
P × Q means Q is brother of P
P ÷ Q means Q is wife of P
P + Q means Q is sister of P
Which of the following means M is the grandfather of T?

Explanation:

Option 1:

M is the brother of N, who is the sister of L So, M is also the brother of L. L is the wife of C who is the father of T. Thus, M cannot be the grandfather of T.

Option 2:

M and T are at the same position in option 2 as in 1. Also, since the symbols and their position in option 2 is the same as that in option 1, the relation between the two is also the same.

Option 3:

M is the father of F who is the sister of L. L is the brother of Z. Thus, M is the father of F, L and Z. Z is the wife of T. Thus M cannot be the grandfather of T.

Thus, none of the given options means M is the grandfather of T.

Hence, option (d).

Alternatively,

Except for the ‘−’ sign, all the other signs convey a relationship in the same generation. For M to be the grandfather of T, there should be two ‘−’ signs. This is not present in any of the options.

Hence, option (d).