MBA CET: Coded Blood Relations
Coding Key:
- A X B: A is the brother of B
- A ÷ B: B is the father of A (Reverse direction)
- A + B: A is the sister of B
- A – B: A is the mother of B
1. Which of the following means ‘M is the maternal uncle of R’?
Correct Option: 3
Rationale: M X D means M is the brother of D. D – R means D is the mother of R. Since M is the brother of R’s mother, M is the maternal uncle of R.
2. In the expression ‘T – S ÷ V X W’, how is W related to T?
Correct Option: 1
Rationale: S ÷ V means V is the father of S. V X W means V is the brother of W (or W is the brother of V). Since V is the father, W is S’s uncle. T – S means T is the mother of S. Thus, W (the father’s brother) is the Paternal Uncle of the family unit.
3. Which of the following ensures that ‘H is the grandson of J’?
Correct Option: 1
Rationale: H X K means H is a male. K ÷ M means M is the father of K. M ÷ J means J is the father of M. Since J is the grandfather and H is male, H is the grandson of J.
4. Which of the following means ‘P is the daughter of S’?
Correct Option: 5
Rationale: P + K means P is the sister of K (P is female). K ÷ S means S is the father of K. Therefore, S is also the father of P, making P the daughter of S.
5. Which of the following means ‘F is the paternal grandfather of G’?
Correct Option: 1
Rationale: G ÷ K means K is the father of G. K ÷ F means F is the father of K. F X M means F is the brother of M (confirming F is male). Thus, F is G’s father’s father (Paternal Grandfather).
