When I tried to add the one letter words 'I' and 'a' to the answer, the wikianswers would not allow me to post, and returned this error message; We could not post your answer because it contained potentially obscene words.

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Message: 1 Date: Mon, 22 Apr 2013 03:57:00 +1000 From: Stuart Anderson <stuart.errol.anderson@gmail.com> To: math-fun@mailman.xmission.com Subject: [math-fun] How many different words are there in the word mathematics? Message-ID: < CA+3-r9NJm6WL6WqJk-WajbkvTuMiSj1787+pwWap31WNobBTJA@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1

spoiler below;

229 according to

http://wiki.answers.com/Q/How_many_different_words_are_there_in_the_word_mat...