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Question
A balloon vendor has 2 red, 3 blue and 4 green balloons. He wants to choose one of them at random to give it to Pranali. What is the probability of the event that Pranali gets,a green balloon.
Solution
Given:
Number of red baloon = 2
Number of blue baloon = 3
Number of green baloon = 4
Let S be the sample space.
∴ n(S) = Number of red baloon + Number of blue balloon + Number of green balloon
= 2 + 3 + 4
= 9
Let C be the event of getting a green balloon.
Given: n(C) = 4
`therefore P (C) =(n(C))/(n(S))`
`=4/9`
Hence, the probability of the event that Pranali gets a green baloon is `4/9`
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