Question

average of first 20 natural numbers with square

Answer 1

4 9 16 25 36 49 64 81 100

121 144. 169
......etc

Answer 2

FORMULA USED
$\frac{n(n + 1)(n + 2)}{6}$


SO n =20


$= > \frac{20(20 + 1)(20 +2 )}{6}$



$= > \frac{20(21)(22)}{6}$


2870