document.write( "Question 1203251: The possibility space consists of the integers from 1 to 20 inclusive.
\n" ); document.write( "A is the event ' the number is a multiple of 3'.
\n" ); document.write( "B is the event 'the number is a multiple of 4'.
\n" ); document.write( "An integer is picked at random. Find (a) P(A), (b) P(B'). \n" ); document.write( "

Algebra.Com's Answer #838664 by Edwin McCravy(20054) $\"\"$ $\"About$

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The possibility space consists of the integers from 1 to 20 inclusive.

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document.write( "That means the universal set U is all the integers from 1 through 20.\r\n" );
document.write( "U = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20}

\n" ); document.write( "A is the event ' the number is a multiple of 3'.

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document.write( "That means A is the set of integers of U you get by counting by 3's.\r\n" );
document.write( "A = {3,6,9,12,15,18}

\n" ); document.write( "B is the event 'the number is a multiple of 4'.

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document.write( "That means B' is the set of integers of U you get by counting by 4's.\r\n" );
document.write( "B = {4,8,12,16,20}\r\n" );
document.write( "B' = set of elements of U that are not in B ={1,2,3,5,6,7,9,10,11,13,14,15,17,18,19}\r\n" );
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document.write( "Count those numbers of elements and make those fractions.  Reduce the fractions if\r\n" );
document.write( "possible.\r\n" );
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document.write( "Edwin

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