It is instructive to note that you can rewrite 1+2+3+4....+99+100 as 1+100+2+99+3+98....+50+51
Then you can group each pair of numbers as (1+100)+(2+99)+(3+98)+...+(50+51)
All of these couplets add up to 101, and there are 50 of them. Thus the sum of the first 100 whole numbers is 50x101. This can be calculated at 5,050.
We have to assume that you're talking about whole numbers. The sum is 5,050 .
The sum of the first 40 whole numbers is 780.
The sum of the squares of the first 100 natural numbers [1..100] is 338350, while the sum of the first 100 natural numbers squared is 25502500.
100
5050
The sum of the cubes of the first 100 whole numbers is 25,502,500.
The sum of the first 10 odd whole numbers is 100.
The sum is 10,000.
We have to assume that you're talking about whole numbers. The sum is 5,050 .
The sum of the whole numbers from 1 to 100 inclusive is 5,050.
The sum of the first five whole numbers is 10.
The sum of the first 14 in whole numbers is 91.
The sum of the first 100 numbers, excluding zero, is 5,001.
The sum of the first 100 odd numbers is 10,000.
The sum of the first 50 whole numbers is 1,225.
The sum of the first 1,000 whole numbers is 499,500.
The sum of the first 40 whole numbers is 780.