The sum of the first 800 consecutive numbers is 320,400.
The two square numbers are 72 + 62 = 49 + 36 = 85. The smaller number is therefore 6.
807
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 10,000 even numbers is 100,010,000.
The sum of the first consecutive 800 odd numbers is 640,000.
14 + 15 + 16 = 45
The two square numbers are 72 + 62 = 49 + 36 = 85. The smaller number is therefore 6.
640000. First odd number is 1, 800th odd number is 1599, giving their sum: sum = number_of_numbers x (first_number + last_number) ÷ 2 = 800 x (1 + 1599) ÷ 2 = 640000
807
27 + 29 = 56.
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 300 odd numbers is 90,000
The sum of the first 100 numbers, excluding zero, is 5,001.
The sum of the first 1,000 odd numbers is 1,000,000.