nicoleladybug13 nicoleladybug13

14-04-2017
Mathematics

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Simona's music book includes 50 piano tunes, of which 7 are by Bach, and 18 are by Mozart. If Simona chooses a tune at random, what is the probability that it is either by Bach or by Mozart?

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theflutefairy theflutefairy

14-04-2017

1/2, because there are 25 tunes by Bach or Mozart, and 25/50 simplifies to 1/2

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