Help needed with Ti-89 Tit.

<p>how to calculate permutations and combinations directly in this cal using nPr or nCr and i can't seee keys for factorial(!), nPr [P(n,r)] and nCr [C(n,r)] which are available in my sci. cal.
R we allowed to use both sci and graphing cals simultaneously in Math 2 exam ??</p>

<p>I found the manual here:
<a href="http://education.ti.com/educationportal/appsdelivery/download/save_download.jsp?cid=us&countryid=US&isocode=EN&contentpaneid=17&applicationid=6128&softwareid=6463&inputpage=I%5B/url%5D"&gt;http://education.ti.com/educationportal/appsdelivery/download/save_download.jsp?cid=us&countryid=US&isocode=EN&contentpaneid=17&applicationid=6128&softwareid=6463&inputpage=I&lt;/a&gt;&lt;/p>

<p>Use Ctr+F to directly search "permutations" or w/e.</p>

<p>Thanx Gumbell for dat link.</p>

<p>factorial is Diamond + the division Sign (i think u have to have OS 3.10 Though for that to work) </p>

<p>permutations and combinations can be accessed from the catalog... Go to catalog and press like N then scoll to find nPr and/or nCr (though i would normally just type them by pressing the alpha key.)</p>