document.write( "Question 99895: If a quiz has four true-false questions. How many different patterns of answers are possible? \n" ); document.write( "
Algebra.Com's Answer #72711 by checkley71(8403)\"\" \"About 
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each question has 2 posibilities & there are 4 questions. thus 4^2=16 possible patterns.
\n" ); document.write( "using 1 & 0 the answers we get:
\n" ); document.write( "0001
\n" ); document.write( "0010
\n" ); document.write( "0011
\n" ); document.write( "0100
\n" ); document.write( "0101
\n" ); document.write( "0110
\n" ); document.write( "0111
\n" ); document.write( "1000
\n" ); document.write( "1001
\n" ); document.write( "1010
\n" ); document.write( "1011
\n" ); document.write( "1100
\n" ); document.write( "1101
\n" ); document.write( "1110
\n" ); document.write( "1111\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );