D₄₅=(1,3,5,9,15,45)
D₆₀=(1,2,3,4,5,6,10,12,15,20,30,60)Divizorii comuni:1,3,5,15
45=3²x5
60=2²x3x5
c.m.m.d.c=5
b)D₇₅=(1,3,5,15,25,75)
D₅₀=(1,2,5,10,25,50)DIVIZORII COMUNI:1,5,25
75=3x5²
50=2x5²
c,m,m,d,c=5²=25
c)M₉=(0,9,18,27,36,45,54,63,72,81,90,99,108,117,126,135,144)
M₁₂=(0,12,24,36,48,60,72,84,96,108,120,132,144)multiplii comuni :0,36,72,108,144)cel mai mic multiplu nenul comun este:36
d)M₆=(0,6,12,18,24,30,36,42,48,54,60,66,72,78,84,90,96)
M₈=(0,8,16,24,32,40,48,56,64,72,80,88,96)MULTIPII COMUNI SUNT:0,24,48,72 96)CEL MAI MIC MULTIPLU NENUL:24