Find the sum of the first 100 natural numbers.

Find the sum of the first 20 natural numbers.

Find the sum of the first 50 natural numbers.

The famous mathematician associated with finding the sum of the first 100 natural numbers is

Find the HCF of the first 100 natural numbers.

(i) Find the sum of first n natural numbers. (ii) Find the sum of first 100 natural numbers.

Find the sum of first 100 even natural numbers which are divisible by 5.

Statement 1 The difference between the sum of the first 100 even natural numbers and the sum of the first 100 odd natural numbers is 100. Statement 2 The difference between the sum opf the first n even natural numbers and sum of the first n odd natural numbers is n.

Find the sum of first 10 even natural numbers.