document.write( "Question 1107161: There are 4 different mathematics bookd and 5 different science books. In how many ways can the books be arranged on a shelf if
\n" ); document.write( "A. There are no restrictions
\n" ); document.write( "B. Books of the same subject must be placement together
\n" ); document.write( "C. If they must be placed alternately
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Algebra.Com's Answer #722174 by ikleyn(52787)\"\" \"About 
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