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
The sum of the first 40 whole numbers is 780.
The sum of the first 1,000 odd numbers is 1,000,000.
The sum of the first 50 odd numbers is 2,500.
The sum of the first 50 even numbers is 2,550.
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
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 15 prime numbers is 328 .
The sum of the first 25 prime numbers is 1,060.
The sum of the first 15 odd numbers is 225.
The sum of the first 100 odd numbers is 10,000.
The sum of the first 300 odd numbers is 90,000
The sum of the first 100 numbers, excluding zero, is 5,001.
The sum of the first 40 odd numbers is 1,600.
The sum of the first 250 prime numbers is 182,109.