Q. Three fair coins are tossed. What is the probability of getting at least one Head?

  • (A) 1/8
  • (B) 3/8
  • (C) 7/8
  • (D) 5/8
βœ… Correct Answer: (C) 7/8
Explanation: Using complement: P(no Head) = (1/2)^3 = 1/8. Therefore, P(at least one Head) = 1 - 1/8 = 7/8.
Explanation by: Krishna Sharma
Using complement: P(no Head) = (1/2)^3 = 1/8. Therefore, P(at least one Head) = 1 - 1/8 = 7/8.

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