Question

Which Fraction is NOT in its simplest form?

• A. $\frac{1}{3}$
• B. $\frac{2}{3}$
• C. $\frac{4}{5}$
• D. $\frac{2}{4}$

Answer 1

The correct option is D $\frac{2}{4}$

To determine the given fractions are in its simplest form or not, we have to find the common factors in the numerator and the denominator.
Let's look at each options:

1) $\frac{4}{5}$=$\frac{1\times 4}{1\times 5}$= $\frac{4}{5}$
The common factor in both the numerator and the denominator is 1, hence $\frac{4}{5}$ is in its simplest form

2) $\frac{2}{4}$=$\frac{1\times 2}{2\times 2}$= $\frac{1}{2}$
The common factor in both the numerator and the denominator is other than 1, hence $\frac{2}{4}$ is not in the simplest form

3) $\frac{1}{3}$=$\frac{1\times 1}{1\times 3}$= $\frac{1}{3}$
The common factor in both the numerator and the denominator is 1, hence $\frac{1}{3}$ is in its simplest form

4) $\frac{2}{3}$=$\frac{1\times 2}{1\times 3}$= $\frac{2}{3}$
The common factor in both the numerator and the denominator is 1, hence $\frac{2}{3}$ is in its simplest form