A bag contain 75 red balls 25 green ball 90 blue ball . A ball us taken out from the bag at random. What us the probabiliry that this ball is not a blue ball
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No. of red balls = 75
No. of green balls =25
No. of blue balls = 90
Total no. of balls = 190
P ( not a blue ball) = 100/190
= 10/19
hope this answer will be helpful ^_^
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Step-by-step explanation:
the probability of not finding the blue ball = 1 - the probabililty of finding the blue ball
therefore,
the probability of finding the blue ball = (1/75×25×90)
therefore, the probability of not finding the blue ball should be
1 - (1/75×25×90) = (75×25×90 -1)/75×25×90
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