Using all the 9 digits from 1 to 9 and only once, what two numbers multiplied give the largest product?
arithmetic/digits/largest.product New
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Problem
Using all the 9 digits from 1 to 9 and only once, what two numbers multiplied give the largest product? Such as 12345 times 6789. -- MartyW <martyw@garlic.com>, from a book by L. A. Graham
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Osei L Ampadu wrote in article <5kc4i8$4gr@dailyplanet.wam.umd.edu>... > common sense tells me that it's 97531 times 8642... > > but I could be wrong... yes, you're wrong (a little bit) the largest product is 87531 * 9642 = 843973902 -- Igor Krivokon <igor.k@usa.net> [ Editor: for comparison, 97531 * 8642 = 842862902. See also arithmetic/digits/extreme.products. ]