The weighted mean of first n natural numbers when their weights are equal to corresponding natural number, is

Mean of first n natural numbers is

The mean of first 8 natural numbers is

The weighted A . M of first 'n' natural numbers whose weights are equal to the corresponding

Find the mean of first n natural numbers .

The mean of first 10 natural numbers.

The mean of first 10 natural numbers is

The weighted mean of first n natural numbers whose weights are equal to the squares of corresponding numbers is :

the weighted mean of first n natural numbers whose weights are equal to the squares of corresponding numbers , is