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October 21, 2014

October 21, 2014

Posted by **lanz** on Wednesday, November 28, 2012 at 9:48pm.

- MATH -
**Reiny**, Wednesday, November 28, 2012 at 10:28pmsince the number must be < 1 048 000

the number must be like

104ABCD where A can only be 6 or 7

so the ABCD part can be filled in

2x3x2x1 or 12 ways

I will leave it up to you to list those 12 numbers.

Go about it systematically

e.g.

1046789

1046798

1046879

1046897 etc

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