1. 

P - Q means Q is son of P and P x Q means P is brother of Q, P ÷ Q means Q is sister of P, and P + Q means P is mother of Q. Which of the following is definitely TRUE about N x K - M ÷ L?

A. K is father of L and M.
B. L is the daughter of K and is the niece of her uncle N.
C. K is the father of M and L - his son and daughter respectively.
D. M is the uncle of K's brother N.
E. None of these

Answer: Option B

Explanation:

coded-relationships-logical-reasoning-questions-answers

So, choice (B) is correct. Note that sex of K is not known.