Gọi các phân số lớn hơn 3/7 nhưng bé hơn 2/3 là x.
Theo đề ta có: 3/7 < x < 2/3
=>9/21 < x < 14/21
=>x={10/21;11/21;12/21;13/21}
hay viet 4 phan so khac nhau lon hon 3/5 va be hon 3/4
cac ban nao biet giai bai toan nay k?De bai nhu sau:viet 3 phan so khac nhau co cung mau so ma moi phan so do:1 la lon hon phan so 1/5,2 la be hon phan so 1/4 va 3 la lon hon phan so 1/5,be hon phan so 1/4
Viet 5 phan so khac nhau sao cho moi phan so lon hon 5/7 va be hon 6/7
viet 5 phan so khac nhau sao cho moi phan so lon hon 5/7va be hon 6/7
hay viet 4 phan so kha nhau lon hon 3/5 va be hon 3/4.
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 viet 4 phan so kha nhau lon hon 3/5 va be hon 4/5
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
tim 4 phan so lon hon 1phan 5 va be hon 3 phan 4
