1/x^2 / 3/x^3
1/x^2 * x^3/3=x/3
24/52 because there are 6 even number in a 13 card section
2,4,6,8,10,12
and there are four of them so you multiply 6 by 4 to get 24
since you know there are 52 cards then you will place 24 over 52
you can simplify this fraction to 6/13 depending what you want
ST = 1/2 (RV) = VQ = 6
answer
ST = 6
hope it helps