Probability Chapter Review
p363 #2, 3, 6, 10, 13-17, 19-24
2. a) 102/180 = 17/30 b) 72/180 = 2/5 c) 72/102 = 12/17
3. 5 x 6 x 7 x 10 x 8 = 16800
6. a) 
b) 
10. P(Distance|Male) = P(Distance and Male) / P(Male) = (5/38)/(16/38)= 5/16
13. a) comb, 10 b) perm, 30 c) perm, 12 d) comb, 28
14. (
)() + ()() = 4 + 4 = 8
15. a) 
b) 
16. 
. We have to divide by five because they could
rotate around the table that many ways.
17. (
)(
) = 103950. (12 choose
4 tapes AND 10 choose 4 CDs.)
19. 
20. 
21. 
22. 
= 0.2. 4 choose 3 correct fitting out of 6 choose 3
total fittings.
23. 
= 0.16. 7 choose 3 Leaf’s fans out of 12 choose 3
total students.
24. a) 
= 0.00055 b)
= 0.012