Question

N=1•2•3•...•203+2003 la 2002 Rapid va roooggg

Answer 1

Daca se cere restui ompartirii cu 2002 , atunci  2002 = 2*7*11*13

$\Rightarrow\;\underbrace{1\cdot2\cdot\;...\;\cdot\;7\cdot...\cdot11\cdot...\cdot13\cdot...\cdot2003}_{\vdots2002}+2003\;:\;2002=\;...\;( 2003;2002=...\;(rest1)$