document.write( "Question 452252: you are taking a math quiz in which 4 questions are randomly selected from a test bank containing 7 questions. How many versions of the quiz are possible? \n" ); document.write( "
Algebra.Com's Answer #310893 by edjones(8007)\"\" \"About 
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nCr
\n" ); document.write( "=7C4
\n" ); document.write( "=7!/((7-4)!*4!)
\n" ); document.write( "=35
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