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A fair coin is tossed till a head appears for the first time. The probability that the
number of required tosses is odd, is
  • a)
    1/3
  • b)
    1/2
  • c)
    2/3
  • d)
    3/4
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A fair coin is tossed till a head appears for the first time. The prob...
Probability of appearing a head is 1/2. If the number of required tosses is odd, we
have following sequence of events.
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A fair coin is tossed till a head appears for the first time. The probability that thenumber of required tosses is odd, isa)1/3b)1/2c)2/3d)3/4Correct answer is option 'C'. Can you explain this answer?
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