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      Question

      If a coin is tossed 10 times then what is the

      probability of getting three heads?
      A 19/109 Correct Answer Incorrect Answer
      B 22/109 Correct Answer Incorrect Answer
      C 13/118 Correct Answer Incorrect Answer
      D 15/128 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Total sample spaces = 2¹β° Total favourable events N(P) = ¹β°C₃ Probability (E) = (N(P))/(N(S)) = (¹β°C₃ )/(2¹β°)= (¹β°C₃ )/(2^5. 2⁡) = 120/(32 × 32) = 15/128

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