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Probability
Test Description: Basic probability
Instructions: Answer all questions to get your test result.
1) What is the probability for choosing the letter B at random from the word PROBABILITY
A
11/2
B
1/2
C
1/5
D
2/11
2) A box contains 7 red, 14 yellow, 21 green, 42 blue, and 84 purple marbles. A marble is drawn at random from the box. What is the probability of drawing a red marble?
A
7/168
B
7/5
C
1/24
D
1/5
3) A drawer contains 6 red socks, 4 blue socks, and 14 white socks. A sock is pulled from the drawer at random. Find the probability of drawing a blue sock.
A
4/20
B
1/5
C
4/24
D
1/6
4) Suppose you spin a spinner that is equally likely to land on any one of the numbers from 1 to 20. Find the probability of landing on an odd number.
A
1/2
B
1/20
C
11/20
D
10/20
5) with this spinner, what is the probability of a number greater than 4?
A
The probability of a number greater than 4 is 3/8
B
The probability of a number greater than 4 is 1/2
C
The probability of a number greater than 4 is 5/8
D
The probability of a number greater than 4 is 1/8
6) A computer store sells 4 models of computers that can be fitted with 3 sizes of hard drives. What are the total number of combinations possible?
A
7
B
12
C
1
D
1.2
7) A ballot offered 3 choices for president, and 2 choices for vice president. How many different ways could you vote?
A
6
B
5
C
10
D
1
8) The Cougar baseball team has 4 pitchers, and 2 catchers. How many pitcher-catcher combinations are possible?
A
6
B
8
C
2
D
10
9) There are 5 roads from Allen to Baker, 7 roads from Baker to Carlson, and 4 roads from Carlson to Dodge. How many different routes are possible?
A
140
B
35
C
16
D
20
10) Drapery is sold in 4 different fabrics. Each fabric comes in 13 different patterns. Each pattern is offered in 9 different colors. How many combinations are possible?
A
21
B
208
C
104
D
16
*select an answer for all questions
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