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Question

A bag contains 4 white and 6 black balls, - all of the same shape and same size. A ball is drawn from the bag without looking into the bag. Find the probability that the ball drawn is:

(ii) A white ball

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Solution

Step: Find the probability that ball drawn is white

Given: A bag contains 4 white and 6 black balls.

Total number of outcomes =6+4=10

Favourable outcomes for ball drawn to be white =4

Probability that the drawn ball is white

=Number of favourable outcomesTotal number of possible outcomes

=410

=25

Hence, the probability that a white ball is drawn is 25.


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