Răspuns :
a. m21=[21,42,63,84];
b. m18=[18,36,54,72,90];
c. m35=[35,70];
d. m19=[19,38,57,76,95];
b. m18=[18,36,54,72,90];
c. m35=[35,70];
d. m19=[19,38,57,76,95];
M21={21,42,63,84}=>4numere
M18={18,36,54,72,90}=>5numere
M35={35,70}=>2numere
M19={19,38,57,76,95}=>5numere
M18={18,36,54,72,90}=>5numere
M35={35,70}=>2numere
M19={19,38,57,76,95}=>5numere