A bag contains 7 white, 3 red and 4 black balls. A ball drawn at random. Find the probability that it is a red or a black ball.
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Answered by
0
Answer:
white balls = 7
red balls = 3
black balls =4
probabiloty of getting red or black = 7 /12
= 1/2
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4
probability = ( number of desired outcomes) / ( total number of outcomes)
number of desired outcomes = 3 +4 = 7
total number of outcomes = 14
so, probability = 7 / 14 = 1/2
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