document.write( "Question 1082247: What is P(A) if P(B|A)=0.9 and P(A|B)=0.27? \n" ); document.write( "
Algebra.Com's Answer #696343 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "That's not enough information to determine P(A).\r\n" );
document.write( "You have to be given something else, such as P(A⋂B)\r\n" );
document.write( "or P(A⋃B) or something else.\r\n" );
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document.write( "Edwin
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