Răspuns :
x=6c+2...unde c este catul.
2<c=>c>2.
x<50 => 6c+2<50 => 6c<48 => c<8.
c>2 si c<8 , c- numar natural => c={3;4;5;6;7} pentru care avem x={20;26;32;38;44}.
2<c=>c>2.
x<50 => 6c+2<50 => 6c<48 => c<8.
c>2 si c<8 , c- numar natural => c={3;4;5;6;7} pentru care avem x={20;26;32;38;44}.
8/6=1 rest2
14/6=2 rest2
20/6=3 rest 2
26/6=4 rest2
32/6=5 rest2
38/6=6 rest2
44/6=6 rest 2
nr sunt 8,14,20,26,32,38,44
14/6=2 rest2
20/6=3 rest 2
26/6=4 rest2
32/6=5 rest2
38/6=6 rest2
44/6=6 rest 2
nr sunt 8,14,20,26,32,38,44