Mathematics, 19.08.2019 13:30, devinblitz4363
From a class of girls and boys the probability that one student chosen at random to answer a question will be a girl is 1/3 . if four boys leave the class , the probability that a student chosen at random to answer a question will be a girl is 2/5 . how many boys and girls are there in the class before the four boys leave ?
Answers: 1
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From a class of girls and boys the probability that one student chosen at random to answer a questio...
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