document.write( "Question 1207260: What is the Probability of obtaining at least one head when 4 coins are tossed simultaneously? \n" ); document.write( "

Algebra.Com's Answer #845024 by Theo(13342) $\"\"$ $\"About$

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the probability of getting at least one head is equal to 1 minus the probability of getting zero heads.\r
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\n" ); document.write( "\n" ); document.write( "the probability of getting 0 heads is equal to 1/2 * 1/2 * 1/2 * 1/2 = 1/16.\r
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\n" ); document.write( "\n" ); document.write( "the probability of getting at least 1 head is equal to 1 - 1/16 = 15/16.\r
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