WorksheetsSimple Probability and Their Complement
Total questions: 15
Worksheet time: 15mins
The letters that form the word ALGEBRA are placed in a bowl. What is the probability of choosing a letter other than “A”?
2/7
5/49
5/7
10/49
P(not A) =
*Remember to simplify.*
6/8
3/4
2/8
1/4
The chart below represents the number of marbles in a jar.
P(green) =
5/19
10/28
5/14
The cafeteria is serving three kinds of sandwiches: tuna (T), chicken, (C), and peanut butter (P). They are also serving a choice of two drinks: milk (M) or water (W). Which shows the CORRECT Sample Space List of possible combinations?
TW, CW, PW
TW, TM, TC, CW, PW
TW, TM, CW, CM, PW, PM
TCP, MW
How likely are you to roll a 1 on a regular die?
P = 2/6
P = 3/6
P = 5/6
P = 1/6
F
G
H
J
Q2. What is the probability of renting a drama?
1/4, because the probability of renting a drama is 3/4.
3/4, because the probability of renting a drama is 1/4.
4/5, because the probability of renting a drama is 1/5.
1/5, because the probability of renting a drama is 4/5.
How likely are you to NOT roll a 1 on a regular die? (Complement)
P' = 2/6
P' = 3/6
P' = 5/6
P' = 1/6
What is a Complement in probability?
Saying-- You look very nice today.
Probability of an event happening
Probability of an event NOT happening
Not here
What is the complement of choosing a red marble if there are 8 red marbles in a jar of 15?
P' = 3/15
P' = 7/15
P' = 8/15
P' = 15/8
Billy Bob is rolling a number cube with the numbers 1-6. What is the probability that she will roll a 4 or a 5?
1/2
1/3
1/6
1/4
How likely are you to choose a yellow marble out of a jar, if there are 6 blue, 2 red, and 4 yellow?
P = 4/10
P = 1/3
P = 2/12
P = 6/12
The cards shown above are picked up, shuffled, and placed facedown in a stack. What is the probability that the top card in the stack does NOT have an odd number on it?
1/3
1/2
4/9
5/9
Jade put 3 green tiles, 7 red tiles, and 11 orange tiles in a box. If she closes her eyes and picks a tile, what is the probability that the tile will NOT be green?
1/7
1/3
11/21
6/7
What is the probability of spinning an odd number on the spinner?
1/5
2/5
3/5
4/5
