Question

Pick the odd one out.

• A. $\frac{2}{3}$
• B. $\frac{6}{9}$
• C. $\frac{9}{15}$
• D. $\frac{12}{18}$

Answer 1

The correct option is C $\frac{9}{15}$

$\frac{2}{3}$ , $\frac{6}{9}$ and $\frac{12}{18}$ are the fractions which look different but are of the same value.
$i.e.,\frac{6}{9}=\frac{3\times 2}{3\times 3}=\frac{2}{3}$
$\frac{12}{18}=\frac{4\times 3}{6\times 3}=\frac{4}{6}=\frac{2\times 2}{2\times 3}=\frac{2}{3}$

These fractions are called equivalent fractions.
You can get many equivalent fractions from a fraction by simply multiplying or dividing both numberator and denominator of that fraction.
Here, $\frac{2}{3}=\frac{6}{9}=\frac{12}{18}$ are equivalent fractions.
So, $\frac{21}{28}$ is the odd one here.