(5+7)*(5-3)=12*2=24
It could be that if: 3+6+7+x = 24 The: x = 8
What is 4 divided by 1,234
36 - 18
-9
1+2+3+4+5+6+7+8+9 = 45
only using the numbers once
1*8*9 + sqrt(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.
There will probably be other solutions but one is, 69 + 14 = 69 + 1 = 70
998,000
2,5,13,647,809
It could be that if: 3+6+7+x = 24 The: x = 8
10
There is only one combination. In a combination the order of the numbers does not matter so the only combination is 0123456789. This is the same as 1326458097
(7+6-5) x 3 = 8 x 3 = 24
One solution is, 4! + 67 + 2 = 24 + 69 = 93
3! = 6.