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Question
In a class, there are 18 girls and 16 boys. The class teacher wants to choose one pupil for class monitor. What she does, she writes the name of each pupil on a card and puts them into a basket and mixes thoroughly. A child is asked to pick one card from the basket. What is the probability that the name written on the card is the name of a boy?
Solution
Total no. of possible outcomes = 34 (18 girls, 16 boys)
E ⟶ event of getting boy name
No. of favorable outcomes = 16 (16 boys)
Probability, P(E) =`"No.of favorable outcomes"/"Total no.of possible outcomes"`
P(E) =16/34 =8/17
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