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Q7: Question – Paper 1 – June 2018
Q7: Question – Paper 1 – June 2018
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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]