There are 7 arithmetic means between 3 and 35. What is the sum of all the terms? Date of Exam May 1998 Subject Mathematics, Surveying and Transportation Engineering Problem There are 7 arithmetic means between 3 and 35. What is the sum of all the terms? A. 133 C. 665 B. 608 D. 171 Answer Key Click here to show or hide the answer key [ D ] Solution Click here to expand or collapse this section There are 9 terms in all, a1 = 3 and a9 = 35 $S = \dfrac{n}{2}(a_1 + a_n)$ $S = \dfrac{9}{2}(3 + 35)$ $S = 171$ ← answer Category Algebra Arithmetic Progression Arithmetic Means Sum of Arithmetic Progression Log in to post comments
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