document.write( "Question 1132654: Let
\n" ); document.write( "S
\n" ); document.write( " be the universal set, where:
\n" ); document.write( "S
\n" ); document.write( "=
\n" ); document.write( "{
\n" ); document.write( "1
\n" ); document.write( ",
\n" ); document.write( "2
\n" ); document.write( ",
\n" ); document.write( "3
\n" ); document.write( ",
\n" ); document.write( "...
\n" ); document.write( ",
\n" ); document.write( "18
\n" ); document.write( ",
\n" ); document.write( "19
\n" ); document.write( ",
\n" ); document.write( "20
\n" ); document.write( "}\r
\n" ); document.write( "\n" ); document.write( "Let sets
\n" ); document.write( "A
\n" ); document.write( " and
\n" ); document.write( "B
\n" ); document.write( " be subsets of
\n" ); document.write( "S
\n" ); document.write( ", where:\r
\n" ); document.write( "\n" ); document.write( "Set
\n" ); document.write( "A
\n" ); document.write( "=
\n" ); document.write( "{
\n" ); document.write( "1
\n" ); document.write( ",
\n" ); document.write( "3
\n" ); document.write( ",
\n" ); document.write( "4
\n" ); document.write( ",
\n" ); document.write( "7
\n" ); document.write( ",
\n" ); document.write( "9
\n" ); document.write( ",
\n" ); document.write( "10
\n" ); document.write( ",
\n" ); document.write( "13
\n" ); document.write( ",
\n" ); document.write( "18
\n" ); document.write( ",
\n" ); document.write( "19
\n" ); document.write( "}
\n" ); document.write( " \r
\n" ); document.write( "\n" ); document.write( "Set
\n" ); document.write( "B
\n" ); document.write( "=
\n" ); document.write( "{
\n" ); document.write( "2
\n" ); document.write( ",
\n" ); document.write( "3
\n" ); document.write( ",
\n" ); document.write( "5
\n" ); document.write( ",
\n" ); document.write( "7
\n" ); document.write( ",
\n" ); document.write( "8
\n" ); document.write( ",
\n" ); document.write( "9
\n" ); document.write( ",
\n" ); document.write( "11
\n" ); document.write( ",
\n" ); document.write( "13
\n" ); document.write( ",
\n" ); document.write( "14
\n" ); document.write( ",
\n" ); document.write( "16
\n" ); document.write( ",
\n" ); document.write( "18
\n" ); document.write( ",
\n" ); document.write( "19
\n" ); document.write( ",
\n" ); document.write( "20\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Find the following:\r
\n" ); document.write( "\n" ); document.write( "The number of elements in the set (
\n" ); document.write( "A
\n" ); document.write( "∩
\n" ); document.write( "B
\n" ); document.write( "c
\n" ); document.write( "):
\n" ); document.write( "n
\n" ); document.write( "(
\n" ); document.write( "A
\n" ); document.write( "∩
\n" ); document.write( "B
\n" ); document.write( "c
\n" ); document.write( ")
\n" ); document.write( " = \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The number of elements in the set (
\n" ); document.write( "B
\n" ); document.write( "∩
\n" ); document.write( "A
\n" ); document.write( "c
\n" ); document.write( "):
\n" ); document.write( "n
\n" ); document.write( "(
\n" ); document.write( "B
\n" ); document.write( "∩
\n" ); document.write( "A
\n" ); document.write( "c
\n" ); document.write( ")
\n" ); document.write( " is\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #749748 by ikleyn(52781)\"\" \"About 
You can put this solution on YOUR website!
.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "

            Did you fall from an oak by posting in this format ?

\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );