Question 912984
10 girls: 3B, 7(not blue)
choose 2
a) P(both) = {{{3C2/(10C2)}}} 0r {{{(3/10)(2/9)}}} = 1/15
b) P(neither) = {{{7C2/(10C2)}}} 0r = {{{(7/10)(6/9)}}} = 7/15
c) P(at least 1) = 1 - P(none) = 1 - (b) = 1- 7/15