document.write( "Question 696777: there are ten questions on a test. the instruction says that only seven of the questions are to be answered. how many ways can the seven to be answered be selected? \n" ); document.write( "

Algebra.Com's Answer #429557 by Afolabyte(4) $\"\"$ $\"About$

You can put this solution on YOUR website!
Total no of questions=10
\n" ); document.write( "no required 2 b answered=7
\n" ); document.write( "by 4mula we have
\n" ); document.write( " n!/(n-r)!
\n" ); document.write( "10P7=10!/10-7)!
\n" ); document.write( "=10!/3!
\n" ); document.write( "=10*9*8*7*6*5*4
\n" ); document.write( "=604800.
\n" ); document.write( "Hope it works. \n" ); document.write( "

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