Monthly Archives: October 2011

Puzzle 47

Find the error in this mathematical conundrum. Answer Saturday. 1=1 [To start] a=b [Got it?] a•a=b•a [Both sides multiplied by a] a^2=ab [Which is] a^2-b^2=ab-b^2 [Subtraction axiom with b^2] (a+b)(a-b)=b(a-b) [Factored] (a+b)(a-b)/(a-b)=b(a-b)/(a-b) [Divide both sides by (a-b)] a+b=b [Which is] … Continue reading

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Puzzle numbering

I found I had a numbering error earlier in the puzzles and have fixed it. Puzzle 42 is still puzzle 42 for the number sake though.

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Puzzle 46

Study this post and all things in it. What is vitally wrong with it? Actually, nothing in it is wrong, but you must admit that it is most unusual. Don’t just zip through it quickly, but study it scrupulously. With … Continue reading

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Puzzle 45

Happy Columbus Day! And Canadian Thanksgiving. And what other holiday you celebrate! Dr Dr What did that mean? Answer Saturday.

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Puzzle 44

I think my last one was clever. This one… ehh not so much. How can you throw a ball so that it goes a short distance, comes to a total stop, reverses its motion, and then goes the opposite way? … Continue reading

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