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Food for mind

today let us look for a puzzle :
"3 criminals and 4 hats puzzle":
                                                 there are 3 criminals in the jail.the police man said that "i have 4 hats.two is of red color and 2 is of blue color".he maid the criminals to stand in straight line and placed a each hat on them but they did not know which color hat is placed on their hat.he placed such that "A" can see "B" and "c" ."b" can see the "c".and "c" Can not see any body.the police man said if you answer which cap is remaining i'll leave all of you"so..help the criminals now....answer

 yes "b" will answer.if red hat on "c" and red hat on "B",  "A" could have answer immediately like blue hat is on my head and blue is remaining.hence "A" kept quite without answering "B" think that "c" has red color hat..hence "a" not answered may be blue hat is on my head and answered as that "b" have blue hat...

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