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WorksheetsSimple Probability, OR, NOT
Total questions: 25
Worksheet time: 1hrs 9mins
Name
Class
Date
1.
Experimental probability is: number of times the event occurs/total number of trials
a)
True
b)
False
2.
Theoretical Probability is: number of outcomes favorable to that event/number of possible outcomes
a)
False
b)
True
3.
If I flip a coin 10 times how many times should I get heads?
a)
1
b)
10
c)
3
d)
5
4.
Ryan has 4 rap songs, 11 pop songs, 8 country songs, and 2 rock songs. What is the probability of Ryan picking a rock song or a pop song?
a)
2/25
b)
13/25
c)
11/25
d)
22/25
5.
A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?
a)
3/10
b)
3/9
c)
1/9
d)
1/3
6.
Theoretically, what is the probability of rolling a sum of one with a pair of dice?
a)
0
b)
1/6
c)
1/12
d)
1/36
7.
What is the probability of choosing a vowel from the alphabet?
a)
21/26
b)
5/26
c)
1/21
d)
7/21
8.
What is the probability of spinning a shade of blue?
a)
1/5
b)
2/5
c)
3/5
d)
4/6
9.
What is the probability of spinning a red if we spin 30 times?
a)
1/5
b)
1/30
c)
3/30
d)
1/10
10.
If you choose from the following M & M colors, what is the probability that you choose blue?
5 green
6 yellow
8 blue
7 brown
5 green
6 yellow
8 blue
7 brown
a)
8/26
b)
4/13
c)
8/25
d)
1/3
11.
The following M & M colors are in the bowl:
4 yellow, 6 orange, 3 green, 5 blue, 2 brown
What is the probability of selecting a brown candy?
4 yellow, 6 orange, 3 green, 5 blue, 2 brown
What is the probability of selecting a brown candy?
a)
2/18
b)
1/9
c)
2/20
d)
1/10
12.
What is the probability of spinning an even number?
a)
16 2/3%
b)
33 1/3%
c)
50%
d)
75%
13.
What is the probability of spinning a number less than 5?
a)
16 2/3%
b)
33 1/3 %
c)
66 2/3%
d)
83 1/3%
14.
What is the probability of selecting an orange candy?
a)
0%
b)
25%
c)
50%
d)
100%
15.
Find the probability of not rolling a 2 on a single die.
a)
1/6
b)
2/6
c)
5/6
d)
2
16.
What is the probability of spinning green or blue?
a)
0
b)
5/12
c)
1/2
d)
3/4
17.
How do you write 0.02 as a percent?
a)
20%
b)
200%
c)
2%
d)
.02%
18.
The probability of an event occurring, P(A), can be expressed as a fraction, decimal, or percent.
a)
True
b)
False
19.
The letters that form the word ALGEBRA are placed in a bowl. What is the probability of choosing a letter other than “A”?
a)
2/7
b)
5/49
c)
5/7
d)
10/49
20.
The letters that form the word MATHEMATICS are placed in a bowl. What is the probability of choosing a letter that is a vowel?
a)
8/121
b)
4/11
c)
2/11
d)
4/121
21.
The letters that form the word MATHEMATICS are placed in a bowl. What is the probability of choosing a "M"?
a)
8/121
b)
4/11
c)
2/11
d)
4/121
22.
Number of favorable outcomes over the total number possible.
a)
probability
b)
sample space
c)
combination
d)
outcome
23.
A pizza has 5 pieces. Sara eats 3 of the pieces. What fraction of the pizza did Sara eat?
a)
3/5
b)
2/5
c)
5/5
d)
1/5
24.
P(C or E) =
*Remember to simplify.*
*Remember to simplify.*
a)
2/8
b)
1/4
c)
4/8
d)
1/2
25.
What is the probability of spinning an even section OR a red section?
a)
3/8
b)
5/8
c)
7/8
d)
1/4
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