In coded relation type questions, the relationships are represented by certain codes or symbols such as + , - , ÷ , × , * etc. Then relationships between certain persons, given in the form of these codes, are to be analysed.
P + Q means P is the brother of Q; P - Q means P is the mother of Q and P * Q means P is the sister of Q. Which of the following means M is the maternal uncle of R ?
Justification: M is the maternal uncle of R means M is the brother of the mother (say K) of R i.e. M + K - R.