co ? so thap phan co cac chu so khac nhau viet tu cac chu so 0,1,2,3 ma phan nguyen co 1 chu so hoac 2
tu cac chu so 2,4,6,8 viet duoc bao nhieu so thap phan co 4 chu so khac nhau ma chi co 2 chu so o phan nguyen
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
hay cho biet co tat ca bao nhieu so thap phan co cac chu so khac nhau viet duoc tu cac chu so 0;1;2;3ma co 2 chu so o phan nguyen
Cho 3 chu so 3,4,5. Tinh tong cac so thap phan co 3 chu so khac nhau ma phan thap phan co 1 hoac 2 chu so viet boi cac chu so tren.
tu cac chu so 0,2,4,6 hoi viet duoc bao nhieu so thap phan khac nhau ma chi co 2 chu so o phan nguyen
co the viet duoc bao nhieu so thap phan co 3 chu so khac nhau tu cac chu so 1,2,3 trong cac so viet duoc co bao nhieu so co 1 chu so o phan thap phan
co ? so thap phann co cac chu so khac nhau viet tu cac chu so 0,1,2,3 ma phan nguyen co 2 chu so
Tu cac cs 0,1,2,3 lap duoc bao nhieu so thap phan ma phan thap phan co 1 , 2 ,3 cs.