document.write( "Question 1132047: Flip a coin 10 times , what is the probability of not getting a head?
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Algebra.Com's Answer #748889 by ikleyn(52814)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "(a)   What is the probability of not getting a head?\r
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document.write( "     \"%281%2F2%29%5E10\" = \"1%2F2%5E10\" = \"1%2F1024\".       ANSWER\r\n" );
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document.write( "     By the way, it is THE SAME probability as of not getting a tail (!)\r\n" );
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\n" ); document.write( "\n" ); document.write( "(b)   What is the probability of getting a head at least 2 times\r
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document.write( "     The probability of getting a head at least 2 times is the COMPLEMENT to getting  a head not more than 1 time and is equal to\r\n" );
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document.write( "     1 - \"%28%281%2F2%29%5E10+%2B+C%5B10%5D%5E1%2A%281%2F2%29%2A%281%2F2%29%5E9%29\" = 1 - \"%28%281%2F2%29%5E10+%2B+10%2A%281%2F2%29%5E10%29\" = 0.9893 = 98.93%.     ANSWER\r\n" );
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