Mathematics · Sequences and Series
Let a1, a2, ..., a10 be an A.P. with common difference -3 and b1, b2, ..., b10 be a G.P. with common ratio 2. Let ck = ak + bk for k = 1, 2, ..., 10. If c2 = 12 and c3 = 13, then ∑k=110 ck is equal to:
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2021
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