# Past Papers’ Solutions | Edexcel | AS & A level | Mathematics | Core Mathematics 1 (C1-6663/01) | Year 2011 | June | Q#9

Question a. Calculate the sum of all the even numbers from 2 to 100 inclusive, 2 + 4 + 6 + …… + 100 b. In the arithmetic series k + 2k + 3k + …… + 100 k is a positive integer and k is a factor of 100. i. Find, in terms of k, an expression […]