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+1 vote
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in Probability by (32.3k points)
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A bag contains 3 red, 3 white and 3 green balls. One ball is taken out of the bag at random. What is the probability that the ball drawn is: 

i. red. 

ii. not red. 

iii. either red or white.

1 Answer

+2 votes
by (32.3k points)
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Best answer

Let the three red balls be R1, R2, R3, three white balls be W1, W2, W3 and three green balls be G1, G2, G3.

∴ Sample space,

i. Let A be the event that the ball drawn is red.

ii. Let B be the event that the ball drawn is not red.

iii. Let C be the event that the ball drawn is red or white.

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