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Question

A bag contains $$4$$ white ball, $$6$$ red balls, $$7$$ black balls and $$3$$ blue balls. One ball is drawn at random from the bag. Find the probability that the ball drawn is :white


Solution

Total numbers of balls $$=20$$
Number of White Balls $$=4$$
Total Balls $$=20$$
$$P(white)=\dfrac{4}{20}=\dfrac{1}{5}$$

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