Review Questions
Review Questions
1. A figure skater competing at a local competition needs a mean of 5.8 (out of a total 6.0) to win the first-place medal. If there are three judges and one of them gives her a 5.5, what is the lowest score she can get from the remaining two judges if she still wants to finish first?
(A) 4.8
(B) 5.2
(C) 5.5
(D) 5.9
(E) 6.0
2. Suppose events A, B, and C are independent. If and what is P(C)?
(A) .05
(B) .2
(C) .25
(D) .5
(E) 2
3. Johnny has a 1% chance of getting a perfect score on the SAT II Math IIC. If he has a 5% chance of getting a perfect score on the SAT II Writing, what is the probability that he won’t get a perfect score on either test?
(A) .05
(B) .15
(C) .50
(D) .94
(E) .99
4. Joey wants to buy a three-scoop ice cream cone. There are 15 flavors to choose from. How many different three-scoop combinations can Joey get?
(A) 5
(B) 15
(C) 150
(D) 450
(E) 455
5. A casting agent for a movie is looking to fill three female roles: the beautiful blonde, the beautiful brunette, and the beautiful redhead. If there are 40 actresses vying for one of the roles, how many different castings can there be? (Note: it matters which role each actress gets.)
(A) 2032
(B) 15, 984
(C) 21, 320
(D) 59,280
(E) 120,000
6. Suppose set A has 9 elements and set B has 4 elements. If C is the number of elements in and D is the number of elements in what is the minimum value of CD?
(A) 1
(B) 4
(C) 5
(D) 9
(E) 13
Help | Feedback | Make a request | Report an error