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Worksheets

Probability Gear Up

Total questions: 26

Worksheet time: 7hrs 30mins

Name
Class
Date
1.
Ben has a basket of 5 red balls, 3 yellow balls, and 2 green balls. What is the probability that the probability he randomly chooses will be red?
a)
1/2
b)
1/5
c)
1/10
d)
5/8
2.
A bag of marbles has 8 red marbles and 6 purple marbles. Jennifer will randomly select 1 marble from the bag. What is the probability that she will select a purple marble?
a)
6/8
b)
3/4
c)
6/14
d)
3/7
3.
A bag of candy contains 2 packs of Skittles, 4 Twizzlers, and 10 Reese's cups. What is the probability of reaching into the bag and choosing either a pack of Skittles or a Reese cup?
a)
3/4
b)
1/4
c)
3/8
d)
1/8
4.
An ice cream parlor has six different flavors. They have 4 toppings and 2 types of cones. How many possible ice cream combinations are there?
a)
24
b)
48
c)
6
d)
12
5.
A regular deck contains 52 cards, 2 of which are red eights. Assuming the cards are dealt randomly, which is the probability that the first card dealt will be a red eight?
a)
1/26
b)
1/13
c)
1/52
d)
2/13
6.

What is the probability of spinning a 2 on the spinner?

a)

1/2

b)

1/3

c)

1/8

d)

1/4

7.

What is the probability the spinner stops on yellow?

a)

.075

b)

50%

c)

25%

d)

3/8

8.

What is the probability of the spin stopping on yellow?

a)

1/4

b)

.25

c)

50%

d)

75%

9.

What is the probability of spinning an even number?

a)

0.25

b)

0.33

c)

50%

d)

75%

10.
A die is rolled. What is the probability that the result is less than 3 ?
a)
1/2
b)
1/3
c)
1/4
d)
1/6
11.
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
12.
A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?
a)
5/6
b)
1/2
c)
1/3
d)
1/6
13.

P(not A) =

*Remember to simplify.*

a)

2/6

b)

3/4

c)

2/8

d)

1/4

14.
The chart below represents the number of marbles in a jar.
P(green) = 
a)
5/19
b)
10/28
c)
5/14
15.
The probability of it raining today is 30%.  What is the probability that it will NOT rain?
a)
30%
b)
70%
c)
100%
d)
0%
16.

There are 4 blue marbles, 5 red marbles, 1 green marble and 2 black marbles in a box. Suppose you select one marble at random. What is the probability that the marble chosen is not green

a)

41.67%41.67\%  

b)

91.67%91.67\%  

c)

75%75\%  

d)

8.33%8.33\%  

17.

Lucy has the spinner pictured and spins it twice in a row. What is the probability that she lands on blue first and then on yellow or green? Simplify.

a)

1 / 16

b)

1 ⁄ 6

c)

1 ⁄ 8

d)

3 ⁄ 4

18.

Find the probability of each set of independent events.


Rolling a six on the first roll of a 1-6 number cube and rolling an odd number on the second roll of the same cube.

Simplify.

a)

1/12

b)

1/6

c)

1/8

d)

1/2

19.

A coin and a number cube with the numbers 1 through 6 are tossed. What is the probability of the coin showing tails and the number cube showing the number greater than 2? Simplify.

a)

1/12

b)

1/4

c)

1/8

d)

1/3

20.

The letters that form the word ALGEBRA are placed in a bowl. What is the probability of choosing the letters “A” or "E" when drawing from the bowl? Simplify.

a)

2/49

b)

2/7

c)

3/7

d)

10/49

21.

Sam is fishing in a new pond that was just stocked with 3 bluegill, 4 catfish, 7 bass, and 2 carp. What is the probability that he caught a bluegill or a carp? Simplify.

a)

1/40

b)

1/8

c)

3/124

d)

5/16

22.
You roll a six sided die. What is the probability of rolling an even number three times in a row? 
a)
3/100
b)
1/2
c)
1/6
d)
1/8
23.
Sarah has two spinners.  Spinner A has six equal sections and spinner B has eight equal sections. Sarah will spin the two spinners at the same time.  What is the probability that both spinners will land on a color that is not red?
a)
1/6
b)
7/6
c)
4/7
d)
1/3
24.

In a jar of Jolly Ranchers, P(Grape) = .42 and P(Apple) = .09.

What is P(Grape or Apple)?

a)

.33

b)

.51

c)

.038

d)

.544

25.

At Halloween, Mr. Shesman had a large bag of candy. The probability of randomly selecting a Reese’s was 0.35. The probability of randomly selecting a Snickers was 0.45. What was the probability of selecting a Reese’s or Snickers?

a)

0.8

b)

0.4

c)

0.1

d)

.16

26.
A letter of the alphabet is chosen at random, then a coin is flipped. What is the probability of choosing a letter from the word MATH then getting tails? 
a)
17/26
b)
1/13
c)
5/13
d)
5/26