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A Ball is Drawn at Random from a Box Containing 12 White, 16 Red and 20 Green Balls. Determine the Probability that the Ball Drawn Is: Red Or White - Mathematics

A ball is drawn at random from a box containing 12 white, 16 red and 20 green balls. Determine the probability that the ball drawn is: 

red or white

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Solution

Total number of balls in the box=48  

Total possible outcomes on drawing g ball=48 

n(s)=48 

red or a white ball =12+16=28 balls 

Event of drrawing a red or white ball=E=28 

n(E)=28 

Probability of not drawing a green ball= `(n(E))/(n(s))=28/488=7/12`

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APPEARS IN

Selina Concise Maths Class 10 ICSE
Chapter 25 Probability
Exercise 25 (B) | Q 11.4 | Page 393
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