Find the sum of the first 20 natural numbers.
Note
Use the formula for the sum of the first n natural numbers: n(n+1)/2. For n = 20, the sum is 20 × 21 / 2 = 210.
Find the sum of the first 20 natural numbers.
Use the formula for the sum of the first n natural numbers: n(n+1)/2. For n = 20, the sum is 20 × 21 / 2 = 210.