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Three coins are tossed together. Write all the possible outcomes. Now, find the probability of getting at least two heads. - Mathematics

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Question

Three coins are tossed together. Write all the possible outcomes. Now, find the probability of getting at least two heads.

Sum

Solution

When three coins are tossed, possible outcomes are: 

HHH, HHT, HTH, HTT, THH, THT, TTH, TTT  

Total possible outcomes = 8  

Favorable outcomes for at least two heads = HHT, THH, HTH, HHH 

Number of favorable outcomes = 4

P(at least two heads) = `4/8 = 1/2`

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Chapter 25: Probability - Exercise 25 (C) [Page 395]

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Selina Mathematics [English] Class 10 ICSE
Chapter 25 Probability
Exercise 25 (C) | Q 27.2 | Page 395
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