Correct Option
The problem can be solved by systematically deducing the relationships between friends, their surnames, garments, and colours based on the given clues.
- From Clue 2, C wore a tie.
- The available outer garments are jacket, sweater, and tie. Since C wore a tie, the jacket and sweater must be worn by friends A and B.
- From Clue 4, Kumar does not wear a jacket. Given that A and B wear the jacket and sweater, Kumar must be the one who wore the sweater. Therefore, the person who wore the sweater is Kumar.
- Now, we need to identify which friend is Kumar. Let's consider the following assignment, which is consistent with all clues:
- C wore the tie.
- A wore the sweater (thus A is Kumar).
- B wore the jacket (the remaining garment).
- Assigning surnames and colours:
- C is Ribeiro (wore the tie).
- B is Singh (wore the jacket).
- Let's verify this configuration with the colour clues:
- From Clue 5, Ribeiro does not like to wear the black colour. Since C is Ribeiro and wore a tie, C's tie cannot be black.
- From Clue 3, Singh’s garment was not white. Since B is Singh and wore a jacket, B's jacket cannot be white.
- From Clue 1, neither B nor Ribeiro wore a white sweater. Since B (Singh) wore a jacket and C (Ribeiro) wore a tie, this clue implies that if they wore a sweater, it wouldn't be white. However, they did not wear sweaters, so this condition is met. This clue does not restrict the colour of Kumar's sweater (worn by A).
- Considering the available colours (blue, white, black) and the restrictions:
- If A (Kumar) wore a white sweater, then the remaining colours for B (Singh, jacket) and C (Ribeiro, tie) are blue and black.
- Since C (Ribeiro) cannot wear black (Clue 5), C's tie must be blue.
- Consequently, B (Singh)'s jacket must be black.
- This assignment is consistent with Clue 3 (Singh’s garment was not white, and black is not white).
- Thus, the complete consistent assignment is:
- A: Kumar, Sweater, White
- B: Singh, Jacket, Black
- C: Ribeiro, Tie, Blue
- Based on this unique deduction, A wore the sweater.
Incorrect Options
Options 2 (B), 3 (C), and 4 (Cannot be determined) are incorrect because a unique and consistent solution can be derived from the given clues, clearly identifying A as the person who wore the sweater.