document.write( "Question 977940: why 0factorial=1 \n" ); document.write( "
Algebra.Com's Answer #599446 by Alan3354(69443)\"\" \"About 
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why 0factorial=1
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\n" ); document.write( "By agreement, or convention.
\n" ); document.write( "\"0%5E0+=+1\" also.
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