How to get 24 with these numbers...

You need to use all 4 numbers only once. You can use any operation.

3, 4, 6, and 8

9,6,6, and 5

2, 2, 5, and 2

7,2,9 and 8

1. (8-6)*3*4
2. (9*6)-(6*5)
3. 2*[2+(5*2)]
4. (9+7)*2-8

I hope that helps!

(3,4,6,8) ---> 3*4*(8-6)
(5,6,6,9) ---> 6*9-(5*6)

(2,2,2,5) ---> 5^2 - 2/2

(2,7,8,9) ---> ???

3*4*(8-6)=24
(6+6)*(5-sqrt(9))=24
(2*5+2)*2=24
(8-2)*(7-sqrt(9))=24

8 x 6 - ( 6 x 4)

9 x 6 - ( 6 x 5)

5^2 - (2 / 2)

(27 / 9) x 8