Defence Exam  >  Defence Questions  >  An unbiased coin is tossed until the first he... Start Learning for Free
An unbiased coin is tossed until the first head appears or until four tosses are completed, whichever happens earlier. Which of the following statements is/are correct?
1. The probability that no head is observed is 1/16
2. The probability that the experiment ends with three tosses is 1/8
Q. Select the correct answer using the code given below:
  • a)
    1 only
  • b)
    2 only
  • c)
    Both 1 and 2
  • d)
    Neither 1 nor 2
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
An unbiased coin is tossed until the first head appears or until four ...
S = {H, TH, TTH, TTTH, TTTT}
P (T)= P (H) = 1/2
[Probability of getting head or tail in a single toss] Probability that no head is observed = P(TTTT)
= P(T) P(T) P(T) P(T)
1/24 = 16
And the probability that the experiment ends with 3 tosses
= P (TTH)
= P(T) P(T) P(H)
= 1/8
Hence, both statements are correct.
View all questions of this test
Explore Courses for Defence exam
An unbiased coin is tossed until the first head appears or until four tosses are completed, whichever happens earlier. Which of the following statements is/are correct?1. The probability that no head is observed is 1/162. The probability that the experiment ends with threetosses is 1/8Q. Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?
Question Description
An unbiased coin is tossed until the first head appears or until four tosses are completed, whichever happens earlier. Which of the following statements is/are correct?1. The probability that no head is observed is 1/162. The probability that the experiment ends with threetosses is 1/8Q. Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about An unbiased coin is tossed until the first head appears or until four tosses are completed, whichever happens earlier. Which of the following statements is/are correct?1. The probability that no head is observed is 1/162. The probability that the experiment ends with threetosses is 1/8Q. Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An unbiased coin is tossed until the first head appears or until four tosses are completed, whichever happens earlier. Which of the following statements is/are correct?1. The probability that no head is observed is 1/162. The probability that the experiment ends with threetosses is 1/8Q. Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?.
Solutions for An unbiased coin is tossed until the first head appears or until four tosses are completed, whichever happens earlier. Which of the following statements is/are correct?1. The probability that no head is observed is 1/162. The probability that the experiment ends with threetosses is 1/8Q. Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Defence. Download more important topics, notes, lectures and mock test series for Defence Exam by signing up for free.
Here you can find the meaning of An unbiased coin is tossed until the first head appears or until four tosses are completed, whichever happens earlier. Which of the following statements is/are correct?1. The probability that no head is observed is 1/162. The probability that the experiment ends with threetosses is 1/8Q. Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of An unbiased coin is tossed until the first head appears or until four tosses are completed, whichever happens earlier. Which of the following statements is/are correct?1. The probability that no head is observed is 1/162. The probability that the experiment ends with threetosses is 1/8Q. Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?, a detailed solution for An unbiased coin is tossed until the first head appears or until four tosses are completed, whichever happens earlier. Which of the following statements is/are correct?1. The probability that no head is observed is 1/162. The probability that the experiment ends with threetosses is 1/8Q. Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of An unbiased coin is tossed until the first head appears or until four tosses are completed, whichever happens earlier. Which of the following statements is/are correct?1. The probability that no head is observed is 1/162. The probability that the experiment ends with threetosses is 1/8Q. Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice An unbiased coin is tossed until the first head appears or until four tosses are completed, whichever happens earlier. Which of the following statements is/are correct?1. The probability that no head is observed is 1/162. The probability that the experiment ends with threetosses is 1/8Q. Select the correct answer using the code given below:a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Defence tests.
Explore Courses for Defence exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev