The sum of the even numbers up to 2k, where k is an integer, is k(k + 1) = k2 + k
No. Odd numbers can be written as the sum of consecutive integers, but some multiples of odd numbers are even.
The sum of the first 50 natural numbers is 1,251.
The sum of the first 200 natural numbers is 20,001.
The sum of two even numbers is always an even number.
The sum of two even numbers is always an even number.
The sum is infinite
The sum of two odd numbers is always even.
If this question means "in the interval 0 to 16 inclusive, is the sum of the odd numbers the same as the sum of the even numbers ?" then the answer is no. The sum of the even numbers is eight more than the sum of the odd ones.
The sum of two odd numbers is always even; the sum of three odd numbers is always odd; the sum of four odd numbers is always even; the sum of five odd numbers is always odd; etc
The sum of two odd numbers or two even numbers is an even number. The sum of an odd number and an even number is an odd number.
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.
The sum of the first 10,000 even numbers is 100,010,000.