Question

Calculeaza suma numerelor care impartite la 11 dau catul 5 si restul nenul

Answer 1

d:11=5 si r<11
r≠0
D=C×Î+R
d=5×11+r
r=1 => d=5×11+1 => d=56
r=2 => d=5×11+2 => d=57
r=3 => d=5×11+3 => d=58
........
r=9 => d=5×11+9 => d=64
r=10 => d=5×11+10 => d=65
Suma : 56+57+58+59+60+61+62+63+64+65=605
..............