The sum of the first 30 even whole numbers is 30(31) or 930
The sum of the first 10 odd whole numbers is 100.
The sum of the first 30 positive even numbers is 930.
The sum of the first 200 even numbers is 40,200.
Five of them.
The sum of the 25 primes less than 100 is even (it is 1060).The first prime number is 2. Every other prime number is odd.So, of the 25 primes less than 100, one is even and 24 are odd.Any two odd numbers sum to an even number. Therefore, an even number of odd numbers has an even sum. So the sum of 24 odd numbers is even.Therefore, the sum of the 25 primes less than 100 is even.
The sum of the first 1,000 whole numbers is 499,500.
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 cubes of the first 100 whole numbers is 25,502,500.
The sum of the first 10 odd whole numbers is 100.
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.
The sum of the first 50 even numbers is 2,550.
The sum of the first 10,000 even numbers is 100,010,000.
The sum of the first 100 even numbers is 10,100
The sum of the first 10 even numbers is 110.