Question 1190806
0 red balls is 5C0*3C2/8C2=3/28
1 red ball is 5C1*3C1/8C2=15/28
2 red balls is 5C2*3C0/8C2=10/28
CDF is 3/28 for 0; 18/28 for 0,1, 1 for 0,1,2.