document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1133872>Question 1133872</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Show that ((n+1) combination 1) - (n combination 1) = 1 </SPAN>\n" );
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document.write( "\"((n+1) combination 1)\" is the number of ways you can choose 1 of (n+1) objects.  Obviously, that number is (n+1).<br><BR>\n" );
document.write( "Similarly, \"(n combination 1)\" is the number of ways you can choose 1 of n objects, which is clearly n.<br><BR>\n" );
document.write( "So ((n+1) combination 1) - (n combination 1) = (n+1)-n = 1 </SPAN>\n" );
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