AP EAMCET · Maths · Probability
A coin is tossed until a head appears or it has been tossed thrice. Given that head doesn't appear on the first toss, the probability that coin tossed thrice is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
A coin is tossed until a head appears or it has been tossed thrice. Given that head doesn't appear on the first toss. Total possible cases or sample space =H,TH,TTH,TTT Probability of head =PH=12 Probability of first tail and second head=PTH=12×12=14 Probability of first…
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