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September 21, 2014

September 21, 2014

Posted by **joi** on Friday, November 11, 2011 at 8:49am.

a) Calculate the probability that both pupils chosen to write the report on the first day are boys.

b) Two boys wrote the report on the first day. They are then exempted from writing the report on the second day.

Calculate the probability that both pupils chosen to write the report on the second day are of the same gender.

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