document.write( "Question 950421: In a proof of 1 + 2 +3+ ... + n = n(n+1)/2 by mathematical induction, an appropriate first step is to prove which of these statements?
\n" ); document.write( " a. 1=1(1+1)/2
\n" ); document.write( "b.1+2=1+n
\n" ); document.write( "c. 1=n(n+1)/2
\n" ); document.write( "d. 1+n=n(n+1)/2 \n" ); document.write( "

Algebra.Com's Answer #580387 by josgarithmetic(39621) $\"\"$ $\"About$

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The simplest case, for n=1.
\n" ); document.write( "Choice (a). \n" ); document.write( "

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