So cac so thap phan co 3 chu so phan thap phan ma cac so do lon hon 10 va nho hon 11 la
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
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
hay cho biet co bao nhieu so thap phan co 3 chu so o phan thap phan ma lon hon 10 va be hon11
hay cho biet co bao nhieu so thap phan co 3 chu so o phan thap phan ma lon hon 9 va hon 10
tu cac chu so 0,1,3,5 hay viet cac so thap phan be hon 1 ,moi so thap phan deu co ba chu so khac nhau . xep cac so do theo thu tu
tu lon den be;
tu be den lon ;
co bao nhieu so thap phan lon hon 3,1 va nho hon 3,2 ma co 2 chu so o phan thap phan
hay cho biet co tat ca bao nhieu so thap phan co2 chu so o phan thap phan ma so do lon hon 12.5 va nho hon 13.4
hay cho biet co bao nhieu so thap phan lon hon 19,1 va nho hon 19,2 ma co 3 chu so o phan thap phan