The answer is 385
The sum of the first 10 even numbers is 110.
1+4+9=14
The sum of the first 10 counting numbers (1-10) is 51.
The sum of the first five whole numbers is 10.
100
The sum of the first 10 even numbers is 110.
The sum of the first 10 odd whole numbers is 100.
1+4+9=14
14
The sum of the first 10 counting numbers (1-10) is 51.
The sum of the first 10 natural numbers is 51, with an average of 5.1
The sum of the first five whole numbers is 10.
-10 or +10
100
It is 385.
10
Answer is 4000000: The sum of the first N odd numbers is N^2. Look at 1,3,5 for example. There are 3 numbers and the sum is 9 which is 3^2. Add 7 and the sum is 16 which is 4^2. So the of the first 2000 consecutive odd numbers is 2000^2 Note 2000 is 2(10^3). When we square that it is 4x10^6=4000000