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Find the sum of all integers between 1 and 200 that are not multiples of 9
Five consecutive terms of an arithmetic sequence have a sum of 40. The product of the first, middle, and last term is 224. Find the terms of the sequence
the sum of first three terms of a convergent infinite geometric series is 19. The sum of the series is 27. Find the first term and the common ratio
the second term of a convergent infinite geometric series is 8/5. The sum of the series is 10. Show that tere are two possible series, and find the first term and the common ratio in each case.