Question
Mark the correct alternative in the following question:
The probability that a person is not a swimmer is 0.3. The probability that out of 5 persons 4 are swimmers is:
  1. $\text{ }^5\text{C}_4(0.7)^4(0.3)$
  2. $\text{ }^5\text{C}_1(0.7)(0.3)^4$
  3. $\text{ }^5\text{C}_4(0.7)(0.3)^4$
  4. $(0.7)^4(0.3)$

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