Direction: Study the information carefully to answer the question that follow.
A basket contains 3 blue, 2 green and 5 red balls.
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If three balls are picked at random, what is the probability that atleast one is red ?
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- 1/2
- 7/12
- 11/12
- 1/5
Correct Option: C
Total Number of outcomes = 10C3 = 120
Number of outcomes not containing red balls = 5C3 = 10
∴ Probability that at least one is red = 1 - 10/120 = 11/12
