mateforum.ro
MateForum
http://www.mateforum.ro/
TMMATE problema 1
http://www.mateforum.ro/viewtopic.php?t=3284
Page
1
of
1
TMMATE problema 1
Posted:
Mon Jan 26, 2009 3:25 pm
by
Beniamin Bogosel
Determinati ultimele 2 cifre ale numarului
\( A=1^2-2^2+3^2-4^2+...+2007^2-2008^2+2009^2 \)
.
TMMATE 2009
Posted:
Sun Feb 01, 2009 11:13 pm
by
Marius Mainea
\( A=1005\cdot 2009 \)