Question

Write natural numbers from $30$ to $45$. What fraction of these numbers is odd?

Answer 1

Natural numbers from $30$ to $45$ are $30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45$.

There are $16$ numbers and $8$ of them are odd ones.

So $\frac{1}{2}$ of the numbers are odd.