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Question 17

Logical Reasoning Blood Relations Hard

If \( A+B \) 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 \( A \times B \) means \( A \) is the sister of \( B \) , which of the following shows that \( P \) is the maternal uncle of \( Q \) ?

(A) \( \mathrm{Q}-\mathrm{N}+\mathrm{M} \times \mathrm{P} \)
(B) \( \mathrm{P}+\mathrm{S} \times \mathrm{N}-\mathrm{Q} \)
(C) \( \mathrm{P}-\mathrm{M}+\mathrm{N} \times \mathrm{Q} \)
(D) \( \mathrm{Q}-\mathrm{S} \% \mathrm{P} \)
View Dynamic Solution & Explanation ▼
Correct Solution: Option C

Step-by-step Solution:

Blood Relations Solution

Solution

The goal is to find the expression that means "P is the maternal uncle of Q". This means P must be the brother of Q's mother.

Symbol Definitions:

  • 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

Analysis of Option C: P - M + N × Q

  1. N × Q means 'N is the sister of Q'.
  2. M + N means 'M is the mother of N'. Since N is Q's sister, M is also the mother of Q.
  3. P - M means 'P is the brother of M'.

Combining these steps, we find that P is the brother of M, and M is the mother of Q. This makes P the maternal uncle of Q, which matches the required relationship.

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