document.write( "Question 1146056: Phil has 4 books to read but cannot take them all on vacation. Use Pascal’s triangle to find the number of ways he can choose 3 books. \n" ); document.write( "
Algebra.Com's Answer #767438 by Boreal(15235)\"\" \"About 
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1
\n" ); document.write( "1--2--1
\n" ); document.write( "1--3--3--1
\n" ); document.write( "1--4--6--4--1
\n" ); document.write( "0--1--2--3--4 books
\n" ); document.write( "There are 3 ways to choose them.
\n" ); document.write( "
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