Two fair coins are tossed. What is the probability of getting at the most one head?

(a) 3/4  (b) 1/4   (c) 1/2   (d) 3/8

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  1. Class 10
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Transcript

Question 5 Two fair coins are tossed. What is the probability of getting at the most one head? (a) 3/4 (b) 1/4 (c) 1/2 (d) 3/8 All outcomes = HH, HT, TH, TT Outcomes with atmost one head = Outcomes with no head + Outcomes with 1 head = TT, TH, HT Now, Probability of getting atmost one head = (๐‘๐‘ข๐‘š๐‘๐‘’๐‘Ÿ ๐‘œ๐‘“ ๐‘œ๐‘ข๐‘ก๐‘๐‘œ๐‘š๐‘’๐‘  ๐‘ค๐‘–๐‘กโ„Ž ๐‘Ž๐‘ก๐‘š๐‘œ๐‘ ๐‘ก 1 โ„Ž๐‘’๐‘Ž๐‘‘)/(๐‘‡๐‘–๐‘ก๐‘Ž๐‘™ ๐‘›๐‘ข๐‘š๐‘š๐‘๐‘’๐‘Ÿ ๐‘œ๐‘“ ๐‘œ๐‘ข๐‘ก๐‘๐‘œ๐‘š๐‘’๐‘ ) = ๐Ÿ‘/๐Ÿ’ So, the correct answer is (a)

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.