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Question
A box contains 5 red marbles, 8 white marbles and 4 green marbles. One marble is taken out of the box at randam.What is the probability that the marble taken out wil be not green?
Sum
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Solution
Total number of marbles = 5 + 8 + 4 = 17
Number of green marbles = 4
Probability of getting a green marble = `" Number of favourable outcomes "/"Total number of outcomes "` = `4/17`
Probability of not getting a green marble = `1-4/17 = 13/17`
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