Color Of The Cap
Four persons A, B, C and D are standing as shown below (see the image above)
- C and D can’t see anyone, B can only see C, A can see B & C
- They know there are 4 caps, 2 of red color and rest blue
- They cannot see the color of their own cap
Who among them can first tell the color of his cap
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Answer : B can tell the color of his own cap
How : From the first statement it is very clear that C and D will never have any chance as they cant see anyone.
Now lets talk about A, A can see B and C but they are wearing cap of different colors so he will also not be in any position to guess color of his own cap.
Now, only person left is B, B is smart enough to calculate that since A is not able to tell his cap color must be different than C, otherwise A would have told his color already.
If you can solve any 3 of these 5 puzzles, you have got a great IQ