Six hundred and thirty thousands two
The sum of the first 40 whole numbers is 780.
20 + 40 = 60
the sum for 20 + 40 + 70 + 80 = 210
40
002+002+001=005
Six hundred and thirty thousands two
40.
The sum of the first 40 whole numbers is 780.
The sum of the first 40 odd numbers is 1,600.
The sum of the first 40 even numbers is 1,640.
58 +40 = 98
The sum of the first forty positive integers can be calculated using the formula for the sum of an arithmetic series, which is (n/2)(first term + last term) where n is the number of terms. In this case, the sum is (40/2)(1 + 40) = 820.
20 + 40 = 60
The sum of the first 40 even positive integers can be equal to 820.
the sum for 20 + 40 + 70 + 80 = 210
40