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Que 5 ifn" term of an A.P. is (2n + 1). What is the sun of its first three terms ? |
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Answer» a(n) = 2n + 1 a(1) = 2×1 + 1 = 3 a(2) = 2×2 + 1 = 5 a(3) = 2×3 + 1 = 7 so sum of first three terms is 3+5+7 = 15 thankyou soo much |
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