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co bao nhieu so 6
Voi 8 so:0,1,2,3,4,5,6,7
a, Hoi co the lap duoc bao nhieu so khac nhau co 6 chu so
b,Hoi co the lap duoc bao nhieu so khac nhau ko co so 3,co so 3
co bao nhieu so co 10 chu so ma so do chia het cho 6
Co bao nhieu so co ba chu so ma tong cac chu so đo bang 6
voi cung co ba chu so 6 , 7 , 8 co the viet duoc bao nhieu so co ba chu so ?
co bao nhieu so co 3 chu so ma ton cac chu so cua no = 6
co bao nhieu chu so co 3 chu so ma tong chung bang 6
Co bao nhieu so co 5 chu so ma so do chia het cho 3 ,dong thoi co it nhat 1 chu so 6
binh co 8 tui moi tui dung 9 vien bi do ,6 tui moi tui dung 8 vien bi xanh .binh muon chia deu so bi vao cac tui sao cho moi tui deu co ca 2 loai bi .hoi binh co the chia so bi do vao nhieu nhat bao nhieu tui ,moi tui co bao nhieu vien bi do ,bao nhieu vien bi xanh?
cho 6 chu so 2;3;5;6;7;9 co bao nhieu so co 3 chu so khac nhau chia het cho 5?
