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Math Help Please?

Science & Mathematics by Anonymous 2018-07-03 21:03:48

Social Science

Math Help Please?

1 answer

Three distinct numbers from {1, 2, . . . , 11} were chosen. If the largest was 7, what is the probability that the number 2 is among the chosen ones?

  • Anonymous

    Then there are exactly C(6,2) possibilities, that is 6*5/2 = 15 possibilities, of which 5 will include the number 2. So the probability is 5/15 = 1/3.

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