Suppose the sum is SS = 100 + 101 + ... + 998 + 999
Also, writing it in reverse order gives
S = 999 + 998 + ... + 101 + 100
so, adding the two together,
2S = 1099 + 1099 + ... + 1099 + 1099 where there are 900 such terms.
So S = 1099*900/2 = 494550.
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Positive integers are greater than negative integers. For positive integers: * The integer with more digits is larger. * If two integers have the same length, compare the first digit. If the first digit is the same, compare the second digit, then the third, etc., until you find a difference. In each case, the integer with the larger digit (at the first position where you find a difference) is the larger one.
The 3 consecutive odd positive integers are 7, 9 and 11.
The sum of two positive integers is positive
The sum of the first three even positive integers is 2 + 4 + 6 = 12.
The three integers are 25, 26, and 27.