Assuming all of {7, 8, 2, 3} have to be used exactly once:
(8 - 2) x (7 - 3) = 24.
It is: (9-5)*(7-1) = 24
(7 + 5 - 9) x 8 = 24
4*3*2 = 24 of them.
You cannot make 24 using only the digits 3, 1, 8, and 8.
It is: 6*(5-2)+6 = 24.
It is: (9-5)*(7-1) = 24
(7 + 5 - 9) x 8 = 24
(6 x 13) - (6 x 9) = 78 - 54 = 24
It is: (5+13)/6 times 8 = 24
9-5=4 7-4=3 3*8=24
4*3*2 = 24 of them.
You cannot make 24 using only the digits 3, 1, 8, and 8.
It looks like there's only one solution: 9 * 6 = 54; 6 * 5 = 30; 54 - 30 = 24.
It is: 6*(5-2)+6 = 24.
(4+5-6)x8=24
(24-20) x 9 -18 =18 Two hours later!!! UGH!!! I need asprin!!! =)
One way is: 3*89-8 = 24