Brain Teasers
3 by 3 Logic
Just take the first two statements in each set as being correct and deduce whether the implication is true or false. (It doesn't matter whether you think the statements are actually true or not, just apply the logic.)
[1] Some chess players are left handed.
All left-handed people play the piano.
True or False? "Some piano players play chess."
[2] Some guitar players eat quiche.
All quiche eaters are surfers.
True or False? "All guitar players are surfers."
[3] No athletes who like probability play scrabble.
All athletes who use deodorant play scrabble.
True or False? "No athletes who use deodorant like probability."
[1] Some chess players are left handed.
All left-handed people play the piano.
True or False? "Some piano players play chess."
[2] Some guitar players eat quiche.
All quiche eaters are surfers.
True or False? "All guitar players are surfers."
[3] No athletes who like probability play scrabble.
All athletes who use deodorant play scrabble.
True or False? "No athletes who use deodorant like probability."
Hint
Try replacing the zany descriptions with something more familiar, like some dogs have white tails, etc.Answer
[1] True[2] False
[3] True
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