A-LevelMathematicsSeriesMay/June 2010Paper 1 Q78 Marks
(a) Find the sum of all the multiples of 5 between 100 and 300 inclusive. (b) A geometric progression has a common ratio of -½ and the sum of the first 3 terms is 35. Find (i) the first term of the progression, (ii) the sum to infinity.
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