a quick math challenge
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12-28-2013, 11:57 AM
Post: #7
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RE: a quick math challenge
(12-27-2013 04:43 PM)Don Shepherd Wrote: Regarding adults, I suspect that if you took a man-on-the-street poll, you'd probably find fewer than 5% would know the divisibility-by-3 rule. Somewhere back in my head I might have found a 40 year old memory of that rule. If I would have searched for it, because it probably wouldn't have crossed my mind to apply it to this challenge in the first place... |
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