There will probably be other solutions but one is, 69 + 14 = 69 + 1 = 70
(5+7)*(5-3)=12*2=24
only using the numbers once
1*8*9 + sqrt(4)
square(1+9) - 8/4
If you are thinking of a mgic square, the answer is NO. The nine numbers sum to 45 so if you have three rows with equal sums, that sum can only be 45/3 = 15. You can have two rows, each adding to 17, and using the digits only once, but you will not use all digits.
998,000
10
It could be that if: 3+6+7+x = 24 The: x = 8
3 x4 - 6 x 7
2,5,13,647,809
One solution is, 4! + 67 + 2 = 24 + 69 = 93
(7+6-5) x 3 = 8 x 3 = 24