document.write( "Question 397593: Let A and B be subsets of U
\n" ); document.write( "n(U)=52
\n" ); document.write( "n(A)=25
\n" ); document.write( "n(B')=17
\n" ); document.write( "n(A U B)=41
\n" ); document.write( "Find n(B)?\r
\n" ); document.write( "\n" ); document.write( "It don't know where to start it \n" ); document.write( "

Algebra.Com's Answer #281715 by robertb(5830) $\"\"$ $\"About$

You can put this solution on YOUR website!
n(B) = n(U \ B') = n(U) - n(B') = 52 - 17 = 35.\r
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