Tu cac cs 0,1,2,3 lap duoc bao nhieu so thap phan ma phan thap phan co 1 , 2 ,3 cs.
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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
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
mk biết câu 1 thui ,
chắc là 6 nhé :>
co bao nhieu so thap phan co cac chu so khac nhau viet dc tu cac cs 0 1 2 3 ma co 1 hoac 2 cs phan nguyen
tu 4 chu so 0,1,2,3 co the lap duoc bao nhieu so thap phan be hon 1 ma moi so deu co 4 chu so va co du mat cac so da cho
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tu cac chu so 0,1,3,6 lap duoc tat ca bao nhieu so thap phan ma phan thap phan co mot hai hay ba chu so ma o moi so co du bon chu so tren moi chu so xuat hien moi lan
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có cac chu so 2 , 4 , 6 , 8 hoi lap duoc bao nhieu so thap phan co du mat 4 chua so da cho ma co 3 chu so o phan thap phan
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
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