document.write( "Question 756551: If you have a 20 sided die, what is the probability of rolling a prime and a number greater than or equal to 15? \n" ); document.write( "
Algebra.Com's Answer #460298 by Edwin McCravy(20055)\"\" \"About 
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document.write( "Here are the sides of the 20-sided die:\r\n" );
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document.write( "Side   prime?    ≧15?    Prime and ≧15?\r\n" );
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document.write( "1,       no,     no            no\r\n" );
document.write( "2,      yes,     no            no\r\n" );
document.write( "3,      yes,     no            no\r\n" );
document.write( "4,       no,     no            no\r\n" );
document.write( "5,      yes,     no            no\r\n" );
document.write( "6,       no,     no            no\r\n" );
document.write( "7,      yes,     no            no\r\n" );
document.write( "8,       no,     no            no\r\n" );
document.write( "9,       no,     no            no\r\n" );
document.write( "10,      no,     no            no\r\n" );
document.write( "11,     yes,     no            no\r\n" );
document.write( "12,      no,     no            no\r\n" );
document.write( "13,     yes,     no            no\r\n" );
document.write( "14,      no,     no            no\r\n" );
document.write( "15,      no,    yes            no\r\n" );
document.write( "16,      no,    yes            no\r\n" );
document.write( "17,     yes,    yes           yes\r\n" );
document.write( "18,      no,    yes            no\r\n" );
document.write( "19,     yes,    yes           yes\r\n" );
document.write( "20       no,    yes            no\r\n" );
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document.write( "Only 17 and 19 are prime and also ≧ 15.\r\n" );
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document.write( "Answer: The probability is 2 out of 20 or \"2%2F20\" which reduces to \"1%2F10\".\r\n" );
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document.write( "Edwin
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