document.write( "Question 401083: Please help me solve this problem.\r
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\n" ); document.write( "\n" ); document.write( "A coin is tossed 3 times. What is the probability of obtaining at least 1 head? \r
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Algebra.Com's Answer #283816 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
P(x>= 1) = 1-P(no heads in three tosses)
\n" ); document.write( "= 1- (1/2)^3
\n" ); document.write( "= 1 - (1/8)
\n" ); document.write( "= 7/8
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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