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2, 7, 12, 17,....Sum ofthe 12 terms of this A. P. is |
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Answer» a = 2 d = 7-2 = 5 s12 = 12/2 [2a + (n-1)d] = 6(2×2 + 11×5) = 6(4+55) = 6(59) = 359 follow me on brainly |
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