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A gambler has 4 coins in his pocket. Two are double-headed, one is double-tailed, and one is normal. The coins cannot be distinguished unless one looks at them. The gambler takes a coin at random, opens her eyes and sees that the upper face of the coin is a head. What is the probability that the lower face is a head?
  • a)
    5/8
  • b)
    4/5
  • c)
    2/3
  • d)
    1/2
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A gambler has 4 coins in his pocket. Two are double-headed, one is dou...
Sample Space: {HH,HH,TT,TH/HT}
There are 5 faces that are heads out of a total 8, so probability is 5/8. Let A be the event that the upper face is a head, and B be the event that the lower face is head.
Pr[A] = Pr[B] = 5/8.
Pr[A∩B] = 2/4 = ½.
Hence option b is correct.
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A gambler has 4 coins in his pocket. Two are double-headed, one is double-tailed, and one is normal. The coins cannot be distinguished unless one looks at them. The gambler takes a coin at random, opens her eyes and sees that the upper face of the coin is a head. What is the probability that the lower face is a head?a)5/8b)4/5c)2/3d)1/2Correct answer is option 'B'. Can you explain this answer?
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A gambler has 4 coins in his pocket. Two are double-headed, one is double-tailed, and one is normal. The coins cannot be distinguished unless one looks at them. The gambler takes a coin at random, opens her eyes and sees that the upper face of the coin is a head. What is the probability that the lower face is a head?a)5/8b)4/5c)2/3d)1/2Correct answer is option 'B'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about A gambler has 4 coins in his pocket. Two are double-headed, one is double-tailed, and one is normal. The coins cannot be distinguished unless one looks at them. The gambler takes a coin at random, opens her eyes and sees that the upper face of the coin is a head. What is the probability that the lower face is a head?a)5/8b)4/5c)2/3d)1/2Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A gambler has 4 coins in his pocket. Two are double-headed, one is double-tailed, and one is normal. The coins cannot be distinguished unless one looks at them. The gambler takes a coin at random, opens her eyes and sees that the upper face of the coin is a head. What is the probability that the lower face is a head?a)5/8b)4/5c)2/3d)1/2Correct answer is option 'B'. Can you explain this answer?.
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