SOLUTION: in a class consisting 18 boys 22 girls , one student is absent . the probability that the absent student is a boy 1)9/20 2)11/20 3)1/2 4)1/4

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Question 636296: in a class consisting 18 boys 22 girls , one student is absent . the probability that the absent student is a boy
1)9/20
2)11/20
3)1/2
4)1/4

Answer by reviewermath(1029) About Me  (Show Source):
You can put this solution on YOUR website!
probability = 18/(18 + 22) = 18/40 = highlight%289%2F20%29