Sum of first 20 natural numbers is 410.

Consider the following statements: 1. The sum of cubes of first 20 natural numbers is 44400. 2. The sum of squares of first 20 natural numbers is 2870. Which of the above statement is/are correct?

Sum of the first 10 natural numbers is

Find the sum of first 200 natural numbers.

The sum of the first 20 natural numbers is ______ .

The sum of first 20 odd natural numbers is

The sum of first 20 odd natural numbers is equal to :

The sum of first 100 natural numbers is ………….

The sum of first 20 even natural numbers is

The variance of first 20- natural numbers is