Sum of 3 digits divisible by their sum
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- A B Cron
Display all natural numbers a, b, c divisible by 7 and the sum is a+b+c=7.
[url=http://math.stackexchange.com/questions/202679/sum-of-digits-and-product-of-digits-is-equal-3-digit-number]Possible alternative problem for this lesson in discrete math.[\url].
[url=http://forum.geogebra.org/viewtopic.php?f=2&t=41803]Forum discussion source.[\url]