CUET Preparation Today
What is the average of the squares of the first five natural numbers? |
11.5 10 12.5 11 |
11 |
Average of squares of Firs n numbers = \(\frac{(n+1)(2n+1)}{6}\) Average of squares of first 5 numbers = \(\frac{(5+1)(10+1)}{6}\) = \(\frac{(6)(11)}{6}\) = 11 |
