A + B means A is the mother of B. A – B means A is the brother of B. A @ B means A is the father of B, and A × B means A is the sister of B. Which of the following alternatives shows that P is the maternal uncle of Q? || ADRE 1.0 (SLRC 2022) Paper-I Solved Questions
QUESTION:
A + B means A is the mother of B. A – B means A is the brother of B. A @ B means A is the father of B, and A × B means A is the sister of B. Which of the following alternatives shows that P is the maternal uncle of Q?
(A) Q–N+M×P
(B) P+S×N–Q
(C) P–M+N×Q
(D) Q–S@P
SOLUTION:
Step 1: break down each symbol
A + B: A is the mother of B.
A – B: A is the brother of B.
A @ B: A is the father of B.
A × B: A is the sister of B.
We have to find the expression where P is the maternal uncle of Q
Step 2: analyse each option one by one
(A) Q–N+M×P
Q is the brother of N;
N is the mother of M;
M is the sister of P
Analysis: This does not show P as Q's maternal uncle.
(B) P+S×N–Q
P is the mother of S;
S is the sister of N;
N is the brother of Q
Analysis: This does not show P as Q's maternal uncle.
(C) P–M+N×Q
P is the brother of of M;
M is the mother of N;
N is the sister of Q
Analysis: P is the brother of M, who is the mother of N, making P the maternal uncle of Q.
(D) Q–S@P
Q is the brother of S;
S is the father of P
Analysis: This does not show P as Q's maternal uncle.
Correct option: (C) P–M+N×Q
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