document.write( "Question 976561: 10 fair coins are tossed,then what is the probability of 3 heads obtained at most?
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Algebra.Com's Answer #598565 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"P%280%29=C%2810%2C0%29%280.5%29%5E0%280.5%29%5E10\"$
\n" ); document.write( " $\"P%280%29=%280.5%29%5E10\"$
\n" ); document.write( " $\"P%281%29=C%2810%2C1%29%280.5%29%5E1%280.5%29%5E9\"$
\n" ); document.write( " $\"P%281%29=10%280.5%29%5E10\"$
\n" ); document.write( " $\"P%282%29=C%2810%2C2%29%280.5%29%5E2%280.5%29%5E8\"$
\n" ); document.write( " $\"P%282%29=45%280.5%29%5E10\"$
\n" ); document.write( " $\"P%283%29=C%2810%2C3%29%280.5%29%5E3%280.5%29%5E7\"$
\n" ); document.write( " $\"P%283%29=120%280.5%29%5E10\"$
\n" ); document.write( "So then,
\n" ); document.write( " $\"P=P%280%29%2BP%281%29%2BP%282%29%2BP%283%29\"$
\n" ); document.write( " $\"P=%281%2B10%2B45%2B120%29%280.5%29%5E10\"$
\n" ); document.write( " $\"P=176%2F2%5E10\"$
\n" ); document.write( " $\"P=11%2F2%5E6\"$
\n" ); document.write( " $\"P=11%2F64\"$ \n" ); document.write( "

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