NIMCET 2015 Logical Reasoning Question 80 with Solution

Question 80

Logical Reasoning Blood Relations Easy

There is a family of six members A, B, C, D, E and F.

There are two married couples in the family and the family members represent three generations.

Each member has a distinct choice of colour amongst Green, Yellow, Black, Red, White and Pink.

No lady member likes either Green or White.

C, who likes Black colour, is the daughter-in-law of E.

B is the brother of F and son of D and likes Pink.

A is the grandmother of F and F does not like Red.

Wife of the husband having a choice for Green colour likes Yellow.

Which of the following is one of the married couples?

(A) CD

(B) AC

(C) AD

(D) Cannot be determined

View Dynamic Solution & Explanation ▼

Correct Solution: Option A

Step-by-step Solution:

We can solve this puzzle by combining the clues to build the family tree generation by generation.

Establish the Generations:
- Clue 6 ("A is the grandmother of F") tells us A is in Generation 1 and F is in Generation 3.
- Clue 5 ("B is the brother of F") tells us B is also in Generation 3.
- Clue 5 also says B is the "son of D," which places D in Generation 2 as the parent of B and F.

Identify the Grandparents (Generation 1):
- Clue 4 ("C, who likes Black colour, is the daughter-in-law of E") means E must be in Generation 1.
- Since A is the grandmother, her husband must be the grandfather. Therefore, E is the grandfather, and the first married couple is {E, A}.

Identify the Parents (Generation 2):
- We know D is the parent of B and F, so D must be the child of the grandparents (E and A).
- We also know C is the "daughter-in-law of E," meaning she is married to E's son. Since D is the son of E, C must be married to D.
- Therefore, the second married couple is {D, C}.


Gen 1 (Grandparents): E (m) --- A (f)
               |
Gen 2 (Parents):      D (m) --- C (f)
               |
Gen 3 (Children):     B (m) and F

Conclusion: The two married couples in the family are E and A, and C and D.

Final Answer: The correct option is A. CD.