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tinh tong cac so thap phan co 4 cs khac nhau ma co 3 cs o phan thap phan lap duoc tu cac chu so 0,3,5,7
tinh tong cac so thap phan co 4 chu so khac nhau ma co hai chu so o phan thap phan duoc lap tu cac so 0,3,5,7
tinh tong cac so thap phan co cac chu so khac nhau ma co 3 chu so o phan thap phan lap duoc tu cac chu so 0;3;5;7
tinh tong cac so thap phan co 4 chu so khac nhau ma co 3 chu so o phan thap phan lap duoc tu cac chu so 0;3;5;7
tinh tong cac so thap phan co 4 chu so khac nhau ma co 3 chu so o phan lap duoc tu cac chu so 0;3;5;7
tinh tong cac so thap phan co 4 chu so khac nhau va co 3 chu so o phan thap phan duoc lap tu cac chu so 0;3;5;7.
Tinh cac so thap phan co 4 chu so khac nhau ma co 3 chu so o phan thap phan lap duoc la 0,3,5,7
1..Voi cac chu so 0;1;2;8.Hoi lap duoc bao nhieu so thap phan co du 4 chu so da cho ma co 2 chu so o phan nguyen
2..Voi cac chu so 2;8;1;5.Hoi lap duoc bao nhieu so thap phan co du 4 chu so da cho ma co 2 chu so o phan nguyen
3..Voi cac chu so 0;4;6;8.Hoi lap duoc bao nhieu so thap phan co du 4 chu so da cho ma co 3 chu so o phan thap phan
4..Voi cac chu so 0;2;4;6.Hoi lap duoc bao nhieu so thap phan co du 4 chu so da cho ma co 2 chu so o phan thap phan
co the viet duoc bao nhieu so thap phan tu cac chu so 0,3,6,8 .cac so thap phan do co 2 chu so o phan thap phan ma co du mat 4 chu so da cho