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Q21: Question – Paper 1 – June 2019
Q21: Question – Paper 1 – June 2019
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21)
Anna plays a game with an ordinary, fair dice.
When she has to roll again,
a) Complete the tree diagram with the four missing probabilities.
21)
Anna plays a game with an ordinary, fair dice.
- If she rolls 1 she wins.
- If she rolls 2 or 3 she loses.
- If she rolls 4, 5 or 6 she rolls again.
When she has to roll again,
- if she rolls an odd number she wins
- if she rolls an even number she loses.
a) Complete the tree diagram with the four missing probabilities.
[2 marks]
b) Is Anna more likely to win or to lose?
You must work out the probability that she wins.
[4 marks]