Answer:
C. 15/62
Step-by-step explanation:
The probability of drawing a boy's name first is 12/32. Then the probability of drawing a girl's name is 20/31, assuming the boy's name was not replaced. The joint probabiilty is the product of these:
... (12/32)·(20/31) = (3·4·5·4)/(16·2·31) = 15/62
20+8=28
16+12=28...
are thus enough
X^3 + h^3 - 3x-3h - x^3 +3x h^3 - 3h h^2 - 2h
------------------------------------- = ------------------ =
h h