tim cac phan so lon hon 5 phamn 6 va be hon 11 phan 12 ma co mau so la 48
So cac so thap phan co 3 chu so phan thap phan ma cac so do lon hon 10 va nho hon 11 la
Viet cac so thap phan be hon 1 ma phan thap phan co ba chu so khac nhau la 3 ; 5 ; 7.
hay viet cac so thap phan be hon 1 ma trong moi so co ba chu so khac nhau o phan thap phan , gom cac chu so 1 , 2 , 3 . xep cac so theo thu tu tu be den lon
tim so thap phan lon hon 6 va be hon 7 biet rang so do co hai cho so khac o phan thap phan va tong cac chu so o phan thap phan bang chu so o phan nguyen
ta da biet 4/5 < 5/6. Hay viet 3 phan so co tu so be hon 100 ma 3 phan so do deu lon hon 4/5 va be hon 5/6
so cac so thap phan co 3 chu so o phan thap phan ma cac so do lon hon 10 va be hon 11
tim tong cua 2 so thap phan biet so thap phan thu nhat co phan nguyen la so lon nhat co mot chu so va phan thap phan la so lon nhat co 2 chu so khac nhau , so thu 2 hon so thu nhat 17,3.
co bao nhieu phan so lon hon 33/77 va be hon 99/84 ma co mau so la 56