Question

Ten rational numbers between $\frac{-2}{5}and\frac{1}{2}$ are $\frac{-7}{20},\frac{-6}{20},\frac{-5}{20},\frac{-4}{20},\frac{-3}{20},\frac{-2}{20},\frac{-1}{20},0$.....,$\frac{1}{20},\frac{2}{20}$
If true then enter $1$ and if false then enter $0$

Answer 1

To get the rational numbers between $\frac{-2}{5}$ and $\frac{1}{2}$
Take an LCM of these two numbers: $\frac{-4}{10}$ and $\frac{5}{10}$
Multiply numerator and denominator by $2$:

$\frac{-8}{20}$ and $\frac{10}{20}$
All the numbers between $\frac{-8}{20}$ and $\frac{10}{20}$ form the answer
Some of these numbers are $\frac{-7}{20}$, $\frac{-6}{20}$, $\frac{-5}{20}$ ...... $0$, $\frac{1}{20}$