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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?
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?
[2 marks]
There are 78 red counters in the bag.
(b) How many blue counters are there in the bag?
[2 marks]