Răspuns:
n:6 =c1 r 4 -> n =6c1 +4 l +2 - > n+2 =6c1 +6 => n+2 =6(c1+2)
n:8 =c2 r 6 -> n =8c2 +6 l +2 -> n+2+=8c2 +8 => n+2 =8(c2+2)
n :9 =c3 r 7 -> n =9c3 +7 l +2 -> n+2 = 9c3 +9 => n+2 =9(c3+2)
M= {6,8,9} =2^3*3^2 = 8*9 = 72
n+2 =72
n =72-2
n =70
Explicație pas cu pas: