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02/07/2021 11:46 am
Topic starter
A bag contains 3 red balls and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is
(i) red?
(ii) not red?
1 Answer
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02/07/2021 11:48 am
The total number of balls = No. of red balls + No. of black balls
Total no. of balls = 5 + 3 = 8
We know that the probability of an event is the ratio between the no. of favourable outcomes and the total number of outcomes.
P(E) = (Number of favourable outcomes/ Total number of outcomes)
(i) Probability of drawing red balls = P (red balls) = (no. of red balls/total no. of balls) = 3/8
(ii) Probability of drawing black balls = P (black balls) = (no. of black balls/total no. of balls) = 5/8