| Exam Board | Edexcel |
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| Module | C1 (Core Mathematics 1) |
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| Topic | Arithmetic Sequences and Series |
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13. (a) Find the sum of all the integers between 1 and 1000 which are divisible by 7 .
(b) Hence, or otherwise, evaluate \(\sum _ { r = 1 } ^ { 142 } ( 7 r + 2 )\).
[0pt]
[P1 June 2002 Question 1]