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Q1. Elizabeth has a bunch of red, yellow and white roses.
She chooses a rose at random.
The probability that she chooses a yellow rose is 0.1
The probability that she chooses a white rose is 0.2
(a) What is the probability that Elizabeth chooses a rose that is either yellow or
white?
(b) What is the probability that Elizabeth chooses a red rose?
(c) There were ten roses in the bunch originally
How many roses were red?