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​Q7: Question – Paper 1 – June 2018

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Content:

• Part A & B) Probability Number Line
• Part C) Working Out Probability​

Quizzes:

• Part A & B) Probability Number Line
• Part C) Working Out Probability

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Question

7) Here is a probability scale.It shows the probability of each of the events A, B, C and D. 

a) Write down the letter of the event that is certain. 

[1 mark]

​b) Write down the letter of the event that is unlikely. 

[1 mark]

​There are 12 counters in a bag:

• 3 of the counters are red.
• 1 of the counters is blue.
• 2 of the counters are yellow.
• The rest of the counters are green.

Caitlin takes at random a counter from the bag.
​

c) Show that the probability that this counter is yellow or green is ²/₃

[3 marks]

Show answers