Can you help me solve this?
Here are the rules: use 1-9 only once. Order of operations matters.
3
-
$\begingroup$ Have you tried? $\endgroup$ – Raystafarian Jan 28 '16 at 16:29
4
$\begingroup$
$\endgroup$
3 | 2 | 4
5 | 7 | 6
8 | 1 | 9
Trial and error, mostly.
4
$\begingroup$
$\endgroup$
3 2 4
5 7 6
8 1 9
I started off with the middle row, the left two numbers have to be above 30, so 8x4, 9x4, 7x5
Bottom middle usually was 1, so the top middle adds up with middle to 9
Left column was interesting. You had to have two numbers that weren't used yet that could get you to -10
