Correct Option (2)
: Green and blue
The solution can be derived by systematically applying the given constraints:
- Constraint 5 states that B wore pants of orange colour.
- Deduction for B's shirt: As no person wore a shirt and pants of the same colour, B could not wear an orange shirt. Additionally, Constraint 2 states that B did not wear a blue shirt. Therefore, B must have worn a black shirt.
- Deduction for C's shirt: The available shirt colours are black, blue, and orange. Since B wore a black shirt, the remaining shirt colours are blue and orange. Constraint 3 states that C did not wear an orange shirt. Consequently, C must have worn a blue shirt.
- Deduction for A's shirt: With B wearing a black shirt and C wearing a blue shirt, the only remaining shirt colour for A is orange.
- Deduction for A's pants: The available pant colours are green, yellow, and orange. B wore orange pants. Constraint 4 states that A did not wear green pants. Therefore, A must have worn yellow pants.
- Deduction for C's pants: With B wearing orange pants and A wearing yellow pants, the only remaining pant colour for C is green.
Based on these deductions, C wore green pants and a blue shirt.
Incorrect Options:
- Option (1) Orange and black: This is incorrect. C wore green pants and a blue shirt. Furthermore, B wore orange pants, making it impossible for C to also wear orange pants.
- Option (3) Yellow and blue: This is incorrect. While C wore a blue shirt, C wore green pants, not yellow pants. A wore yellow pants.
- Option (4) Yellow and black: This is incorrect. C wore green pants and a blue shirt. A wore yellow pants, and B wore a black shirt.