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MHT CET202012 Oct 2020Evening ShiftMathematicsProbabilityActual

An urn contains 4 red and 5 white balls. Two balls are drawn one after the other without replacement, then the probability that both the balls are red is

Options

  1. A5 6
  2. B1 6
  3. C2 9
  4. D4 9

Correct answer

B. 1 6

Step-by-step solution

Red balls =4 and White balls =5 Total balls =4+5=9 Two balls are drawn one after the other without replacement n(S)= 9 1 8 1 =9 8 Required probability = 4 1 3 1 9 8 = 4 3 9 8 = 1 3 2 = 1 6

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