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Contributor

13-12-2009 09:12 PM

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11 REPLIES 11

Not applicable

14-12-2009 09:41 AM

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Occasional Contributor

14-12-2009 09:47 AM

it just takes a bit of concentration...

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Occasional Contributor

14-12-2009 10:41 AM

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Not applicable

14-12-2009 01:45 PM

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Occasional Contributor

14-12-2009 02:22 PM

no because -2+3 does not equal -5

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Valued Contributor

14-12-2009 02:30 PM

eddie, the math just simple wrong ..

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Not applicable

14-12-2009 04:49 PM

that should read 5-(2+3)= 5-5 =0

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Not applicable

15-12-2009 04:23 AM

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Not applicable

15-12-2009 04:27 AM

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Not applicable

15-12-2009 10:00 AM

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Frequent Contributor

04-03-2010 09:38 AM

But then, I suspect you already know this. PS does the M stand for Mathews?

Seeing that you like puzzles here is a tricky one for you.

n + n + n .... + n (n of them) = n^2

then d/dn (n + n + n .... + n) = d/dn(n^2)

1 + 1 + ... + 1 (n of them) = 2n

n = 2n

1 = 2 QED.

Apparently this puzzle is easily solved by 1st year math students, but the 3rd years have a problem spotting the mistake.

;-)

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