HardMath and Logic
3R, 2B hats. 1st/2nd can't guess. What is 3rd's color?
Riddle
3R, 2B hats. 1st/2nd can't guess. What is 3rd's color?
Choose an answer
A.Blue
B.Both colors
C.Cannot determine
D.Red
Hint: It's a word with 3 letters, starting with "R".
Answer
Red
Why this is the answer
If the 3rd professor saw two blue hats, he would know his is red (only 2 blue exist). Since he doesn't know, the others must have at least one red hat... follow the deduction chain.
This riddle is filed under Expert Riddles for Adults and rated Hard.
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