in a class there are 20girls and 12 boys. the teacher collects all of their books in a random order. calculate the probability that the teacher will :a)mark a book belonging to a girl first. b) mark a book belonging to a boy
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Mark a book belonging to girl
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Answer:
Probability that a girl's book will be marked
= Total number of girls/total students
=20/32=5/8
Probability that a boy's book will be marked
= Total number of boys/total students
=12/32
=3/8
Please inform me if this answer is wrong...
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