A class consists of 21 boys and 9 girls. A student is to be selected for social work. Find the probability that a boy is selected *
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Answer:
probability =21/30
=7/10
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There are total 30 students in the class! So to find the probability of a girl picked at random, we should divide 9 by 30 which is equal to 3/10 (on simplifying) and to find the probability of a boy picked at random, we should divide 21 by 30 which is equal to 9/10.
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