Răspuns :
n = C×I + R
n = 7×4 + R (0≤R<4)
n ∈ {7×4 + 0; 7×4 + 1; 7×4 + 2; 7×4 + 3}
=> n ∈ {28; 29; 30; 31}
=> S = 28+29+30+31 => S = 118
n = 7×4 + R (0≤R<4)
n ∈ {7×4 + 0; 7×4 + 1; 7×4 + 2; 7×4 + 3}
=> n ∈ {28; 29; 30; 31}
=> S = 28+29+30+31 => S = 118
[tex]n= 7*4 +r, unde~ r\in{0,1,2,3)
[/tex]
[tex]S= 7*4+ 7*4+1+ 7*4 +2+ 7*4+3\\\\ S= 4*7*4+ 1+2+3\\\\ S= 112+6\\\\ \bold{S= 118}[/tex]
[tex]S= 7*4+ 7*4+1+ 7*4 +2+ 7*4+3\\\\ S= 4*7*4+ 1+2+3\\\\ S= 112+6\\\\ \bold{S= 118}[/tex]