Question

Find the arithmetic mean of first ten odd natural numbers.

Answer 1

First ten odd natural numbers are 1, 3, 5, 7, 9, 11, 13, 15, 17, 19.

Therefore,

$Mean=\overline{X}=\frac{1+3+5+7+9+11+13+15+17+19}{10}=\frac{100}{10}=10$