The sum of numbers from 1 to 101 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 first term is 1, the last term is 101, and there are 101 terms in total. Plugging these values into the formula, we get 101/2 * (1 + 101) = 101/2 * 102 = 5151. Therefore, the sum of numbers from 1 to 101 is 5151.
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It is 162.
How about: 101+23 = 124
To find the sum of the first 100 integers, you first add 1 plus 100 (the first and last numbers of the set) and get 101. Do the same with the next two integers, 2 and 99 and you'll get 101. Since you are adding two integers at a time and there are 100 integers between 1 and 100, you'll get 101, fifty times. Therefore, a shortcut would be to simply multiply 101 times 50 and get 5,050.
The sum of all prime numbers between 1 and 11 is 28.
901