Aflați cate numere de forma 3abc
sunt divizibile cu 4.​


Răspuns :

a={0,1,2,3,4,5,6,7,8,9}=10 solutii

bc:4=>bc={04,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72,76,80,84,88,92,96}=24 de solutii

=>3abc=3004,3008,3012,...,3996=10solutii×24solutii=240 numere de forma 3abc