
[BOR]
0: Safe
1: Be civil and nice.
2: Try not to excessively repost, as a rule of thumb, wait at least 2 months to do it if you *have* to.

[EOR]
[BOC]
I think you've got an arithmetic error in the first, which means the second is wrong too. 

For part (c), you can find the probability of drawing 2 oranges in the  9 cases or using symmetry 3+C(3,2)=6 cases. Then divide that by the probability the first is an orange. 
[EOC]
