document.write( "Question 604415: What is the probability of obtaining at least one head in 3 flips of a coin? \n" ); document.write( "
Algebra.Com's Answer #381169 by Alan3354(69443)\"\" \"About 
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What is the probability of obtaining at least one head in 3 flips of a coin?
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\n" ); document.write( "The probability of none is (1/2)*1/2)*1/2) = 1/8
\n" ); document.write( "Of at least 1 is 1 - 1/8 = 7/8
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