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Question 1
4 marksTina has two bags of counters, Bag A and Bag B.
There are 5 red counters and 3 blue counters in bag A.
There are 4 red counters and 5 blue counters in bag B.
Tina takes at random a counter from each bag.
If P(win)=0.65P(\text{win}) = 0.65P(win)=0.65, what probability is assigned to the complement branch?
Revision notes for AQA GCSE Maths Probability Trees. Open the guide for explanations and worked examples. Written against the AQA GCSE Maths (8300) specification, so the content matches what's examinable rather than general Maths background.
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A player wins a game with probability 0.680.680.68. What probability should go on the “not win” branch of a probability tree?