document.write( "Question 1069235: a fair die is thrown twice Wat is the probability of
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Algebra.Com's Answer #684439 by Theo(13342)\"\" \"About 
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fair die has numbers from 1 to 6.
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\n" ); document.write( "\n" ); document.write( "a prime number can only be divided evenly by itself.
\n" ); document.write( "since all numbers can be divided evenly by 1, division by 1 doesn't count.\r
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\n" ); document.write( "\n" ); document.write( "by definition, 1 is not a prime, even though it can only be divided by itself.\r
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\n" ); document.write( "\n" ); document.write( "the prime numbers between 1 and 6 are therefore 2, 3, 5.\r
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\n" ); document.write( "\n" ); document.write( "the non prime number between 1 and 6 are therefore 1, 4, 6.\r
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\n" ); document.write( "\n" ); document.write( "there's a 50/50 chance you will roll a prime on each roll of the die.\r
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\n" ); document.write( "\n" ); document.write( "so the probability that you will roll a prime on each roll of the die is .5.\r
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\n" ); document.write( "\n" ); document.write( "the probability of rolling two prime number in a row would be .5 * .5 = .25\r
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\n" ); document.write( "\n" ); document.write( "here's one definition from the web.\r
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\n" ); document.write( "\n" ); document.write( "http://www.mathsisfun.com/definitions/prime-number.html\r
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