SOLUTION: Four coins are tossed. Find the probability of tossing at least one head.

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Question 1157528: Four coins are tossed. Find the probability of tossing at least one head.
Found 2 solutions by Edwin McCravy, ikleyn:
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
The probability of tossing at least one head =
ONE MINUS the probability of tossing 4 tails = 1-(1/2)(1/2)(1/2)(1/2) =
1-1/16 = 15/16.

Edwin
Answer by ikleyn(52847)   (Show Source): You can put this solution on YOUR website!
.

It is the COMPLEMENT event to the other event, when there are NO head tossed of four coins


    P = 1 -  =  1 -  = .    ANSWER

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For simple and simplest problems of Elementary Probability theory see the lessons
    - Simple and simplest probability problems
    - Solving probability problems using complementary probability
    - Elementary Probability problems related to combinations
    - A True/False test
    - A multiple choice answers test
    - Typical probability problems from the archive
    - Experimental probability problems
in this site.

Also,  you have this free of charge online textbook in ALGEBRA-II in this site
    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic  "Solved problems on Probability".


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Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson

into your archive and use when it is needed.

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Happy learning (!)


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