Sum of first n integers = n/2(n+1), in this case 25 x 51 = 1275
The sum of the composite numbers between 1 and 50 is 936.
51
The sum of 9 odd numbers must be odd and so cannot be an number.
The sum of the first 50 whole numbers is 1,225.
The sum of the first 50 natural numbers is 1,251.
sum of n natural number is n(n+1)/2 first 50 number sum is 50(50+1)/2 = 1275
(50 + 15) = 65 (50 x 15) = 750 1/50 + 1/15 = 13/150
The sum of the first 50 odd numbers is 2,500.
The sum of the first 50 even numbers is 2,550.
328
140
over 50