Răspuns:
Explicație pas cu pas:
A)12x div. cu 2
x={0,2,4,6,8}
120, 122, 124, 126,128
B)3xy div. cu 5
x={0,1,2,3,4,5,6,7,8,9}
y={0,5}
300,305,310,315,320,325,330,335,340,345,350,355,360,365,370,375,
380,385,390,395
C)7xy div. cu 2 si 5
x={0,1,2,3,4,5,6,7,8,9}
y={0}
700,710,720,730,740750,760,770,780,790