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# A Bag Contains 3 Red Balls, 5 Black Balls and 4 White Balls. a Ball is Drawn at Random from the Bag. What is the Probability that the Ball Drawn Is: Not Red? - Mathematics

A bag contains 3 red balls, 5 black balls and 4 white balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is:

not red?

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#### Solution

$\text{ Number of red balls } = 3$
$\text{ Number of black balls } = 5$
$\text{ Number of white balls } = 4$
$\text{ Total number of balls }= 3 + 5 + 4 = 12$
$\text{ Therefore, the total number of cases is 12 } .$

$P\left( \text{ not a red ball } \right) = 1 - P\left( \text{ a red ball }\right) = 1 - \frac{1}{4} = \frac{3}{4}$

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#### APPEARS IN

RD Sharma Class 8 Maths
Chapter 26 Data Handling-IV (Probability)
Exercise 26.1 | Q 7.4 | Page 15
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