HSC Science (General) 12th Board ExamMaharashtra State Board
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Solution for A Fair Coin is Tossed Five Times. Find the Probability that It Shows Exactly Three Times Head. - HSC Science (General) 12th Board Exam - Mathematics and Statistics

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Question

A fair coin is tossed five times. Find the probability that it shows exactly three times head.

Solution

Let X be the radom variable.
let 'p' be the success and 'q' be the failure

p=1/2, q=1/2

p(Coin shows 3 heads)

=p(x=3)=5c3p3q2

= 10 (1/2)3(1/2)2

=10/32

=5/16

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APPEARS IN

 2014-2015 (March) (with solutions)
Question 4.2.5 | 2.00 marks
Solution A Fair Coin is Tossed Five Times. Find the Probability that It Shows Exactly Three Times Head. Concept: Conditional Probability.
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