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 a, b and c (Posted on 2005-09-27)
If a, b, and c are different numerals between 1 and 9 (inclusive), and

aaaaaa = b * c * bc * (c+c-b) * (c+b+b) * (c-b),

what are a, b, and c?

Note: Adjacent numerals are multi-digit numbers made of those numerals, not the product; i.e., if m=2 and n=3, then mn=23.

 See The Solution Submitted by Josh70679 Rating: 2.5000 (8 votes)

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 No computer, very short | Comment 10 of 12 |
aaa,aaa= aaa x 1001 = a x (3x37) x (7x11x13) so one of b, c, bc, c+c-b, c+b+b or c-b must equal 37 or 74. The only possibility is bc=37, since bc=74 would make c-b negative. Doing the numbers, a=4.
 Posted by Old Original Oskar! on 2005-09-27 13:43:57
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