document.write( "Question 470498: This is the question: For 2 events A and B defined on a sample space S,
\n" );
document.write( "N(AandBcomplement)= 15, N(Acomplement and B)= 50, and N(A and B)=2. Given that
\n" );
document.write( "N(S)= 120, how many outcomes belong to neither A Nor B?
\n" );
document.write( "This is a sample space and algebra of sets problem. I'm not sure where to start.
\n" );
document.write( "Thanks. \n" );
document.write( "
Algebra.Com's Answer #322703 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! For 2 events A and B defined on a sample space S, \n" ); document.write( "N(AandBcomplement)= 15, N(Acomplement and B)= 50, and N(A and B)=2. Given that \n" ); document.write( "N(S)= 120, how many outcomes belong to neither A Nor B? \n" ); document.write( "------------ \n" ); document.write( "Draw 2 intersecting circles; label them A and B. \n" ); document.write( "--- \n" ); document.write( "Draw a rectangle around the circles ; label it S=120 \n" ); document.write( "--- \n" ); document.write( "Put \"2\" in the intersection of A and B. \n" ); document.write( "--- \n" ); document.write( "Put \"15\" in the part of A that is not in the intersection. \n" ); document.write( "Put \"50\" in the part of B that is not in the intersection. \n" ); document.write( "---- \n" ); document.write( "Now you see there are 15+2+50 = 67 in A or B. \n" ); document.write( "--- \n" ); document.write( "Therefore there are 120 - 67 = 53 in S that are not in A or B. \n" ); document.write( "===================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============== \n" ); document.write( " |