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Question
A game of numbers has cards marked with 11, 12, 13, ....., 40. A card is drawn at random. Find the probability that the number on the card drawn is a perfect square.
Solution
Total number of outcomes = 30
The perfect squares lying between 11 and 40 are 16, 25 and 36.
So the number of possible outcomes 3
∴ Probability that the number on the card drawn is a perfect square
= `"Number of possible outcomes"/"Total number of outcomes"`
= `3/30`
= `1/10`
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