Question

Find the average of first 60 natural numbers

Answer 1

answer in the above picture

Answer 2

Answer:

Average= 30.5

Step-by-step explanation:

We know that average of n numbers

$\overline{x} = \frac{ \Sigma \: x}{ n} = \frac{sum \: of \: all \:observation }{total \: number \: of \: observation}$

Here,

Firstly find the sum of first 60 natural numbers

1+2+3+...+59+60

n=60

$S_{60} = \frac{60 \times 61}{2} \\ \\ = 30 \times 61 \\ \\ = 1830$

So

$average = \frac{1830}{60} \\ \\ = 30.5$

Hope it helps you.