How can you make 24 using only 1 6 6 8?

Answer 1

A way of doing this would be:

1 + 8 = 9;

sqrt(9)= 3

3 * 6 = 18

18 + 6 = 24

1+8=9; sqrt(9)=3; 3*6+6=24

Another solution can be:

(1*6-(8-6))!

(6-2)!=4!=4*3*2*1=24