Question

# A box contains 6 green balls, 4 blue balls and 5 yellow balls. A ball is drawn at random. Find the probability of (a) Getting a yellow ball.(b) Not getting a green ball.

A
15,13
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B
415,315
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C
13,35
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D
23,115
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Solution

## The correct option is D 13,35A box contains 6 green balls, 4 blue balls, 5 yellow balls.Total number of balls n(S)=6+4+5=15(a) Let A be the probability of getting yellow ball.n(A)=5Thus the probability of getting yellow ball is P(A)=n(A)n(S)=515=13.(b)Let B be the probability of not getting green ball. That is, probability of getting blue and yellow balls.n(B)=4+5=9Thus the probability of getting yellow ball is P(B)=n(B)n(S)=915=35.

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