Question

[chelsea]

Tăng dần

 b,1/4,3/7,2/5,1/3,4/9

Answer 1

[nguyen van huy]

\(b,\frac{1}{4},\frac{3}{7},\frac{2}{5},\frac{1}{3},\frac{4}{9}\)

Ta có: \(\frac{1}{4}=\frac{1x12}{4x12}=\frac{12}{48},\frac{3}{7}=\frac{3x4}{7x4}=\frac{12}{28},\frac{2}{5}=\frac{2x6}{5x6}=\frac{12}{30}\)\(,\frac{1}{3}=\frac{1x12}{3x12}=\frac{12}{36},\frac{4}{9}=\frac{4x3}{9x3}=\frac{12}{27}\)

 \(\Rightarrow\)\(\frac{12}{48}< \frac{12}{36}< \frac{12}{30}< \frac{12}{28}< \frac{12}{27}\)    

hay \(\frac{1}{4}< \frac{1}{3}< \frac{2}{5}< \frac{3}{7}< \frac{4}{9}\)