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ue is UT'GST instead of SGST.)Find four consecutive terms in an A.P. whose sum is 88 and the sum of the 1st and the3rd terms is 40ke the following questions: (An Qe

Answer»

Let four consecutive terms are a - 3d , a - d , a + d , a + 3d , where a and d is real numbers.

According to question, sum of all four terms = 88(a - 3d) + (a - d) + (a + d) + (a + 3d) = 884a = 88 a = 22 ......(1)

again, sum of 1st and 3rd term is 40e.g., (a - 3d) + (a + d) = 402a - 2d = 40a - d = 20 from equation (1), 22 - d = 20d = 2

hence, a = 22 and d = 2 then, a - 3d = 22 - 3 × 2 = 22 - 6 = 16 a - d = 22 - 2 = 20a + d = 22 + 2 = 24 a + 3d = 22 + 3× 2 = 22 + 6 = 28

therefore, four consecutive term in an A.P are 16, 20, 24, 28



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