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Marcus plays two games of tennis.
For each game, the probability that Marcus wins is 0.35
A probability tree diagram is drawn below.
First game
Second game
Marcus
wins
0.35
Marcus
wins
0.35
0.65
Marcus
does not
win
Marcus
wins
0.35
0.65
Marcus
does not
win
0.65
Marcus
does not
win
Work out the probability that Marcus wins at least one of the two games of tennis.
(2 marks)

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