Paper 1 October/November 2011 MATHEMATICS (9709/13) A Levels
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a) An arithmetic progression contains 25 terms and the first term is −15. The sum of all the terms in the progression is 525. Calculate
(i) the common difference of the progression,
(ii) the last term in the progression,
(iii) the sum of all the positive terms in the progression.
b) A college agrees a sponsorship deal in which grants will be received each year for sports equipment. This grant will be 4000 dollar in…