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Highest Number (Posted on 2004-09-18) Difficulty: 2 of 5
Use all the digits 1 to 9 create three 3-digit numbers, which, when multiplied together creates the highest value possible.

See The Solution Submitted by SilverKnight    
Rating: 3.1250 (8 votes)

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do i have it? | Comment 10 of 19 |

ok

first, 987 are obviously hundreds. 654 are tens. 321 are ones. put the highest numbers first.

Second, consider it this way: if i put the 6 with the 9 it will be multiplied by 7 and 8. if i put it with the 8 it will be multiplied by 7 and 9. but it makes most sense to put it with the 7, because it gets multiplied by 9 and 8, the higher numbers. Use similar thinking to put the 5 with the 8 and 4, the lowest, with the 9. then 3 with 7, 2 with 8, and 1 with 9. 941x852x763=611721516


  Posted by nikki on 2004-09-19 10:37:39
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