**TI89**matpecoTextObject file 02/25/05, 19:47Ruthyp ¥Z«§ tirage ss remise (exau) i fo p(x2=1/x1=1) et p(x2=1/x1=0) son indep p(x=k)= c(k,succe)c(n-k,fail) --------------------- c(n,pop gr.n) p(xž1)=1-p(x=0)à].