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

Algebra ->  Customizable Word Problem Solvers  -> Coins -> SOLUTION: Four coins are tossed. Find the probability of tossing at least one head.       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

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) About Me  (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(52835) About Me  (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 - %281%2F2%29%5E4 =  1 - 1%2F16 = 15%2F16.    ANSWER

--------------

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".


Save the link to this textbook together with its description

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.

Consider these lessons as your textbook,  handbook,  a Solutions Manual,  tutorials and  (free of charge)  home teacher.
Happy learning (!)