Multiple choice

A basket contains 3 red balls, 5 blue balls and 2 yellow balls. If three balls are drawn at random then what is the probability that none is blue?

  1. 1/6

  2. 1/3

  3. 1/12

  4. 3/16

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

We need 3 non-blue balls from 5 non-blue balls (3 red + 2 yellow) out of 10 total. Number of ways to choose 3 from 5 is C(5,3) = 10. Total ways to choose any 3 from 10 is C(10,3) = 120. Probability = 10/120 = 1/12. Option C is correct.

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