Download 6-12 Competency 7 Pretest

Name: ______________________
Class: _________________
Date: _________
ID: A
6-12 Competency 7 Pretest
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
1. A yogurt shop offers 6 different flavors of frozen yogurt and 12 different toppings. How many choices
are possible for a single serving of frozen yogurt with one topping?
a. 144
b. 72
c. 36
d. 665,280
____
2. Two urns contain white balls and yellow balls. The first urn contains 9 white balls and 9 yellow balls and
the second urn contains 8 white balls and 3 yellow balls. A ball is drawn at random from each urn. What is
the probability that both balls are white?
1
4
17
17
a.
b.
c.
d.
11
29
198
72
____
3. Evaluate 7 C 6 .
a.
9
b.
1
c.
5,040
d.
7
____
4. In how many ways can 3 singers be selected from 5 who came to an audition?
a. 1
b. 10
c. 5
d. 60
____
5. This is a spinner used in a board game. What is the probability that the spinner will land on a multiple of
3 and 4?
a.
1
4
b.
1
2
c.
1
8
d.
3
8
____
6. A drawer contains 10 red socks, 9 white socks, and 8 blue socks. Without looking, you draw out a sock
and then draw out a second sock without returning the first sock. What is the probability that the first
sock and the second sock are both white?
5
100
4
1
a.
b.
c.
d.
39
729
39
9
____
7. A bag contains 8 red marbles, 4 white marbles, and 5 blue marbles. Find P(red and blue).
40
12
13
a.
b. 0
c.
d.
17
17
16
1
Name: ______________________
____
8. Evaluate 9 P 4 .
a.
____
ID: A
9
b.
362,880
c.
126
d.
3,024
9. What is the theoretical probability of being dealt exactly three 4's in a 5-card hand from a standard
52-card deck?
a.
b.
2162
54145
94
54145
c.
d.
2
759
2
33
____ 10. A jar contains 7 blue cubes, 4 blue spheres, 5 green cubes, and 6 green spheres. If you select an object at
random, what is the probability that the object is green or a cube?
a.
b.
23
22
5
22
c.
9
11
d.
4
____ 11. A single standard six-sided die is rolled. Find the probability of rolling the number 3.
2
5
1
a.
b.
c.
d.
1
3
6
6
____ 12. Suppose Q and R are independent events. Find P(Q and R).
P(Q) = 0.41, P(R) = 0.44
a. 0.03
b. 0.1804
c. 0.85
d.
0.0123
____ 13. If all possible results are equally likely, what is the probability that a spin of the spinner will land on
an upper case letter or a consonant?
a.
0.9
b.
0.7
c.
0.5
d.
0.3
____ 14. A jar contains 10 blue marbles, 4 red marbles, and 8 white marbles. What are the odds of drawing a blue
marble from the bag?
5
5
11
6
a.
b.
c.
d.
11
6
5
5
____ 15. In how many different orders can you line up 8 cards on a table?
a. 8
b. 1
c. 1,680
2
d.
40,320
ID: A
6-12 Competency 7 Pretest
Answer Section
MULTIPLE CHOICE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
B
A
D
B
D
C
B
D
B
C
C
B
A
B
D
1