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Practice - Basic Probability - Ratios
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Practice Page
Directions: Read carefully. Choose the best answer.

1.
A fair die is rolled. What is the probability that a 2 is rolled?

Choose:
1/2
2/3 1/3 1/6
dieblack

 

 

2.
A spinner is divided into 5 sections of equal area, as shown. What is the probability of the spinner landing on 3?
Choose:
1/3
3/5 2/5 1/ 5
spinner1

 

 

3.
Fifteen chips numbered from 1 to 15 are placed in a sack. If a chip is drawn at random, what is the probability of drawing the chip numbered 11?
Choose:
1/5
1/11 1/15 11/15
sack15

 

 

4.
A card is chosen at random from a standard deck of 52 playing cards. There are 26 red cards and 26 black cards in a deck. What is the probability that a card chosen at random from a deck of cards is a red card?
Choose:
1/2
1/13 1/26 1/52
deck

 

 

5.
There are 18 boys and 16 girls in a math class. A student is chosen at random to represent the class at a Student Council meeting. What is the probability that a girl will be chosen?
Choose:
8/17
10/17 7/34 9/34
students

 

 

6.
A bottle contains 2 green gum balls, 2 red gum balls and 1 blue gum ball. What is the probability of choosing a random gum ball from the bottle that is not green?

Choose:
1/5
2/5 3/5 4/5
bottleyellowfull

 

 

7.
The 11 letters in the word MATHEMATICS are cut apart and placed in a hat. One letter is pulled from the hat at random. What is the probability that the letter is M?
Choose:
1/11
2/11 1/4 1/2
hat

 

 

8.
A sack contains 3 blue chips, 2 red chips and 4 green chips. If one chip is drawn a random, what is the probability of drawing a blue chip?

Choose:
1/2
1/3 1/4 1/9
sack

 

 

9.
The Sierra Club sells 150 raffle tickets to raise money for a local environmental project. The tickets are sequentially numbered from 1 to 150.
sierraticket
 
What is the probability that the winning ticket was numbered 50, 100, or 150?

Choose:
1/5
1/30 1/50 3/50

 

 

10.
A fair die is rolled. What is the probability that the roll will be a prime number?
*Hint: remember 1 is not a prime number

Choose:
1/6
1/3 1/2 2/3
reddie2

 

 

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