What is the sum of the first 20 terms of an A.P., if a=4 and 1 = 36? (A) 40 (B) 200 (C) 400 (D) 800
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What is the sum of the first 20 terms of an A.P., if a=4 and 1 = 36? (A) 40 (B) 200 (C) 400 (D) 800
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