document.write( "Question 1017197: if x is an integer chosen at random from the set {2,11,19,31,51} and y is chosen at random from the set {1,7,18,19,31}.What is the probability that the product xy is a prime factor? \n" ); document.write( "
Algebra.Com's Answer #633537 by stanbon(75887)\"\" \"About 
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if x is an integer chosen at random from the set {2,11,19,31,51} and y is chosen at random from the set {1,7,18,19,31}.What is the probability that the product xy is a prime product ?
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\n" ); document.write( "Prime products:: 1*2 , 1*11, !*19, 1*31
\n" ); document.write( "None of the other products will be prime.
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\n" ); document.write( "P(xy is prime) = 4/(5*5) = 4/25
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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