The sum of all numbers between 1 and 5 is infinite.
The sum of whole numbers between 1 and 5 is 2 + 3 + 4 = 9
The sum of the first 5 numbers is 15. 1+2+3+4+5=15
The numbers are -1, 0, 1, 2 and 3.
They are: 2+3+5+7 = 17
The first three odd numbers are 1, 3, and 5. Their sum is 1 + 3 + 5 = 9.
The sum of the prime numbers from 1 to 12 is equal to 2 + 3 + 5 + 7 + 11 = 28.
The sum of -5 and 20 is 15. The distance between -5 and 20 is 25. The sum of the numbers between -5 and 20 is 180. The sum of the numbers from -5 to 20 is 195.
The sum of prime numbers between 1 and 25 is 100. 2 + 3 + 5 + 7 + 11 +13 +17 + 19 + 23 = 100
The sum of the first 5 numbers is 15. 1+2+3+4+5=15
1+1+1+1+1+=5 * * * * * The question did not ask for the sum of the first counting number five times! The sum of the first 5 counting numbers is 1+2+3+4+5 = 15. Such sums are known as triangular numbers.
The numbers are -1, 0, 1, 2 and 3.
They are: 2+3+5+7 = 17
The first three odd numbers are 1, 3, and 5. Their sum is 1 + 3 + 5 = 9.
It cannot make the sum because: if the numbers are in odd quantity there sum is always a odd number
The sum of the prime numbers from 1 to 12 is equal to 2 + 3 + 5 + 7 + 11 = 28.
12
The sum of the first 1,000,000 positive even numbers is: 2 + 4 + 6 + 8 + ... + 2,000,000 The sum of the first 1,000,000 positive odd integers is: 1 + 3 + 5 + 7 + ... + 1,999,999 The difference between the two is: (2-1) + (4-3) + (6-5) + (8-7) + ... + (2,000,000-1,999,999). This is the same as: 1 + 1 + 1 + 1 + ... + 1. Well how many 1's are there? 1,000,000. So the difference is 1,000,000. Note that if the question asked for the difference between the sum of the first 1,000 positive even numbers and the sum of the first 1,000 positive odd numbers, the answer would be 1,000. The first n even numbers and odd numbers? n.
The numbers are 5 and -4 because 5-(-4) = 9 and 5+(-4) = 1