Question

Find the sum of the sequence 102,97,92,...........Up to 27terms​

Answer 1

Answer:

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Answer 2

Answer:

Given - 102,97,92,... up to 27 terms. a = 102. d = a² - a¹ d = 97 - 102. d = - 5. We know That, sn = n/2 {2a + (n-1)d} Now, according to given information. sn = 27/2 {2 × 102 + (27-1)-5} sn = 27/2 (204 + 26 × -5) sn = 27/2 (204 - 130) sn = 27/2 × 74. sn = 27 × 37. sn = 999. Hence, sum of the following terms is -

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