# Need Math Puzzle Help

• Dec 10th 2007, 01:52 PM
Stew99
Need Math Puzzle Help

use 0-9 twice x x x
x x x Mutiply
_________________
x x x
x x x
x x x
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x x x x x Add above 3 together

no number appears more than twice
• Dec 11th 2007, 06:51 AM
Soroban
Hello, Stew99!

I'll format the problem.
. . Maybe others will be tempted to try it.

Quote:

Use the digits 0-9 exactly twice.
Code:

          A B C       ×  D E F       - - - - -           G H I         J K L       M N P       - - - - -       Q R S T U

I've made some observation . . .

Assuming a number may not begin with zero: .$\displaystyle 0 \:\neq \:\{A, D, G, J, M, Q\}$

Also, neither $\displaystyle C$ nor $\displaystyle F$ can be zero.
. . Otherwise: .$\displaystyle I = U = 0$ ... and we'd have three 0's.

$\displaystyle \text{Moreover, }E \neq 0\;\cdots\;\text{ else }J=K=L=0$

. . Stay tuned . . .

• Dec 11th 2007, 11:19 AM
Stew99
Thanks, but still working on it
Thanks for the update. I'll continue to work towards an answer