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OpenStudy (scarlettthecamel):
27 out of the 36 pupils in class 9b showed an improvement in their mathematical skills last term. What is the probability that one o f these pupils chosen at random, did not improve?
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OpenStudy (mathmale):
Here "P" signifies "the probability of ... " P(a student chosen at random from this group of students had shown improvement) = ?
OpenStudy (mathmale):
This is one of several ways of approaching the problem you've posted.
OpenStudy (scarlettthecamel):
9/36?
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