Each Friday morning I post a riddle to get you to think outside the box and exercise your brain. If you are stumped, share it with a friend or colleague and see if you can figure out the answer together. Leave your answer in the comment section.
This week’s riddle came from the 17th annual Brazilian Olympiad which featured this very tricky logic puzzle. I totally booted this but thought, I’d share it with you.
This week’s brain teaser:
Assume both of these sentences are true:
Pinocchio always lies.
Pinocchio says, “All my hats are green.”
We can conclude from these two sentences that:
A) Pinocchio has at least one hat.
B) Pinocchio has only one great hat.
C) Pinocchio has no hats.
D) Pinocchio has at least one green hat.
E) Pinocchio has no green hats.
Leave your best guess as a comment, and if you’d like to know the correct answer and the logic behind it, click here.
BosGuy 
I don’t think he has any hats at all since he is such a liar. Can’t believe anything he says.
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My W.A.G. is #E – it is the polar opposite of the Prevaricating Puppet’s (borrowing my phrasing from Deedles’s linguistic artistry) fabrication.
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I think none of them, but the first is at least arguable.
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E if he lies none of his hats are green.
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I’m just going to assume that the prevaricating puppet never stands, and he can have all the green hats he wants.
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i was curious so looked up the answer cuz even as a math teacher these questions sometimes confuse me. so im not going to answer…but i am going to use it with my students when school starts again next week.
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