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Q16: Question – Paper 2 – November 2018
Q16: Question – Paper 2 – November 2018
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Question
16) There are only red counters and blue counters in a bag.
Joe takes at random a counter from the bag.
The probability that the counter is red is 0.65
Joe puts the counter back into the bag.
Mary takes at random a counter from the bag.
She puts the counter back into the bag.
(a) What is the probability that Joe and Mary take counters of different colours?
Joe takes at random a counter from the bag.
The probability that the counter is red is 0.65
Joe puts the counter back into the bag.
Mary takes at random a counter from the bag.
She puts the counter back into the bag.
(a) What is the probability that Joe and Mary take counters of different colours?
[2 marks]
There are 78 red counters in the bag.
(b) How many blue counters are there in the bag?
[2 marks]