A basket contains 3 blue, 2 green and 5 red balls. If three balls are picked at random, what is the probability that atleast one is red?
Correct Answer: Description for Correct answer:
Total number of outcomes = \( 10C_3 \) = 120
Number of outcomes not containing red balls = \( 5C_3 \) = 10
Probability that at least one is red = 1 - \( \large\frac{10}{120} = \frac{11}{12} \)
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