Fill in each of the boxes with the numbers 1 to 9 so that the three horizontal equations are true.
Each number is used once; no repetition is allowed.
The calculations are done from left to right (i.e., 72x3=15, not 1) and may involve only positive numbers (so 537=5 is not allowed).
_ _ _ _
_ _ _ _ _      x   =  
  x   x   =   +   + _ + _ +   + _
_  _ x _ = _  _  _
(In reply to
re: allternate solution by Charlie)
I'm not sure I agree with Charlie on this point. I think what has
to be positive is the individual numbers inside each box, not
necessarily the value of the equation.
" (so 537=5 is not allowed)" in this example "5" would be the
content of a box, and I suspect this is what is being disallowed.
But in "4  8 * 1 = 5  6  3" all the boxes are filled with
positive numbers. It's true the evaluation of the equation leads
to a negative number.
We'll have to ask Lisa which way fits what she was thinking.

Posted by Larry
on 20051006 20:28:23 