\input $HOME/tex_doc/format/myplain.tex \magnification 1200 \advance \vsize by 20mm \titrestyle {\twentybf } \withoutcorrigbody %\withoutexono \let \exo \Exo \date {22 janvier 2007} \classification {Algèbre}{(18)} \classe {1gc} \def \datapath {% $HOME/tex_doc/lycee/database/1ere/sti/algebre/proba/} \titre {Probabilités} \input \datapath exo_004.tex \input \datapath exo_007.tex \input \datapath exo_005.tex \bye