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What is the Probability?: Mixed Questions

In this worksheet, students answer mixed questions on probability.

'What is the Probability?: Mixed Questions' worksheet

Key stage:  KS 3

Curriculum topic:  Probability

Curriculum subtopic:  Calculate Theoretical Probability

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

Remember that lists of possible outcomes, tables and tree diagrams are all useful ways to help you work out probabilities.

A probability is given as a fraction or a decimal.

The probability of something not happening = 1 - the probability of it happening.

You should also know when to add probabilities and when to multiply them.

Relative frequency can be used to estimate an experimental probability.

 

 

4 red balls, 5 yellow balls and 6 blue balls are in a bag.

A ball is chosen at random.

What is the probability that it's yellow?

(Write your answer as a reduced fraction in the form a/b)

4 red balls, 5 yellow balls and 6 blue balls are in a bag.

A ball is chosen at random.

What is the probability that it's not yellow?

(Write your answer as a reduced fraction in the form a/b)

4 red balls, 5 yellow balls and 6 blue balls are in a bag.

A ball is chosen at random.

What is the probability that it's red or yellow?

(Write your answer as a reduced fraction in the form a/b)

The letters of the sentence, I LOVE MATHS are placed in a bag.

A letter is chosen at random.

What is the probability that it's a vowel?

(Write your answer as a decimal)

The probability that it will be sunny tomorrow is 0.25

What is the probability that it will not be sunny?

(Write your answer as a decimal)

Two fair coins are thrown.

What is the probability that they will both show heads on top?

(Write your answer as a decimal)

The probability that we win the pub quiz tomorrow is 0.35.

True or false? The probability that we don't win is 0.65.

True

False

The probability of passing the driving test is 0.65.

If 200 people take the test, how many would you expect to pass?

A fair die and a fair coin are thrown.

           

What is the probability of getting a six and a tail?

(Write your answer as a fraction in the form a/b)

A fair die is thrown and this spinner is spun.

 

     

What is the probability of getting a product of 4?

(Write your answer as a reduced fraction in the form a/b)

  • Question 1

4 red balls, 5 yellow balls and 6 blue balls are in a bag.

A ball is chosen at random.

What is the probability that it's yellow?

(Write your answer as a reduced fraction in the form a/b)

CORRECT ANSWER
1/3
  • Question 2

4 red balls, 5 yellow balls and 6 blue balls are in a bag.

A ball is chosen at random.

What is the probability that it's not yellow?

(Write your answer as a reduced fraction in the form a/b)

CORRECT ANSWER
2/3
  • Question 3

4 red balls, 5 yellow balls and 6 blue balls are in a bag.

A ball is chosen at random.

What is the probability that it's red or yellow?

(Write your answer as a reduced fraction in the form a/b)

CORRECT ANSWER
3/5
  • Question 4

The letters of the sentence, I LOVE MATHS are placed in a bag.

A letter is chosen at random.

What is the probability that it's a vowel?

(Write your answer as a decimal)

CORRECT ANSWER
0.4
  • Question 5

The probability that it will be sunny tomorrow is 0.25

What is the probability that it will not be sunny?

(Write your answer as a decimal)

CORRECT ANSWER
0.75
  • Question 6

Two fair coins are thrown.

What is the probability that they will both show heads on top?

(Write your answer as a decimal)

CORRECT ANSWER
0.25
  • Question 7

The probability that we win the pub quiz tomorrow is 0.35.

True or false? The probability that we don't win is 0.65.

CORRECT ANSWER
True
  • Question 8

The probability of passing the driving test is 0.65.

If 200 people take the test, how many would you expect to pass?

CORRECT ANSWER
130
  • Question 9

A fair die and a fair coin are thrown.

           

What is the probability of getting a six and a tail?

(Write your answer as a fraction in the form a/b)

CORRECT ANSWER
1/12
  • Question 10

A fair die is thrown and this spinner is spun.

 

     

What is the probability of getting a product of 4?

(Write your answer as a reduced fraction in the form a/b)

CORRECT ANSWER
1/8
EDDIE SAYS
3/24
---- OR ----

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