UPSC 1995: Seven men, A, B, C, D, E, F and G are standing in a queue in that order. Each one is wearing a cap of a different colour like violet, indigo, blue, green, yellow, orange and red. D is able to see in front of him green and blue but not violet. E can see violet and yellow, but not red. G can see caps of all colours other than orange. If E is wearing an indigo-coloured cap, then the colour of the cap worn by F is

The correct answer is option (c): red. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.

This question was asked in UPSC CSE Prelims 1995, GS Paper 1, as Question 135. It falls under Science & Technology > Logical Reasoning & Puzzles.

This question is rated "difficult". It is a challenging question that demands deep subject knowledge and analytical thinking.

UPSC has asked 65 questions from Logical Reasoning & Puzzles (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.