Bag/ Box / Piggy bank
Bag/ Box / Piggy bank
Last updated at April 16, 2024 by Teachoo
Ex 14.1, 8 (i) 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? Total number of balls in the bag = 5 + 3 = 8 Number of red balls = 3 Probability of getting a red ball = (ππ’ππππ ππ πππ πππππ )/(πππ‘ππ ππ’ππππ ππ πππππ ) = π/π Ex 14.1, 8 (ii) (Method 1) 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 (ii) not red? Total number of balls in the bag = 8 Probability of not getting a red ball = Probability of getting blackballs = (ππ’ππππ πππππππ πππππ )/(πππ‘ππ ππ’ππππ ππ πππππ ) = π/π Ex 14.1, 8 (ii) (Method 2) 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 (ii) not red? Probability of not getting red ball = 1 β Probability of getting a red ball = 1 β 3/8 = π/π