If 'A 3 B' means A is the daughter of B; 'A 5 B' means A is the son of B; 'A 7 B' means A is the sister of B; and 'A 9 B' means A is the brother of B. Which of the following means J is the grandson of K?
Show answer & explanation
Correct answer: C
Explanation
Given code meanings:
• A 3 B: A is the daughter of B
• A 5 B: A is the son of B
• A 7 B: A is the sister of B
• A 9 B: A is the brother of B
We need an expression where J is the grandson of K (J must be male and two generations below K).
Testing the options:
• Option (A) J 3 L 9 K: 'J 3 L' means J is the daughter of L (female, so incorrect).
• Option (B) J 9 L 3 K: 'J 9 L' means J is the brother of L, and 'L 3 K' means L is the daughter of K. Hence, J is the son of K (incorrect).
• Option (C) J 5 L 5 K:
• 'J 5 L' means J is the son of L.
• 'L 5 K' means L is the son of K.
• Therefore, J is the son of K's son, which means J is the grandson of K.
Thus, the correct option is (C).