Question

Find the mean of the first six multiples of $5$.

Answer 1

Calculate the mean of the first six multiples of $5$

The first six multiples of $5$ are $5,10,15,20,25$ and $30$.

The sum of the numbers $=5+10+15+20+25+30=105$.

Thus, the mean of the six numbers $=\frac{105}{6}=17.5$.

Therefore, the mean of the first six multiples of $5$ is $17.5$.