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Question
In a bag there are 44 identical cards with figure of circle or square on them. There are 24 circles, of which 9 are blue and rest are green and 20 squares of which 11 are blue and rest are green. One card is drawn from the bag at random. Find the probability that it has the figure of green square.
Solution
There are 44 identical cards with figure of circle or square in the bag.
∴ Total number of outcomes = 44
Number of cards with green square = 20 − 11 = 9
So, the favourable number of outcomes is 9.
∴ P(card drawn has the figure of green square) = \[\frac{\text{ Favourable number of outcomes }}{\text{ Total number of outcomes }} = \frac{9}{44}\]
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