Let a1,a2,...,a10 be an AP with common difference −3 and b1,b2,...,b – InterviewSolution

1.	Let a1,a2,...,a10 be an AP with common difference −3 and b1,b2,...,b10 be a GP with common ratio 2. Let ck=ak+bk, k=1,2,...,10. If c2=12 and c3=13, then 10∑k=1ck is equal to
Answer» Let $a_{1}, a_{2}, . . ., a_{10}$ be an AP with common difference $- 3$ and $b_{1}, b_{2}, . . ., b_{10}$ be a GP with common ratio $2.$ Let $c_{k} = a_{k} + b_{k}, k = 1, 2, . . ., 10.$ If $c_{2} = 12$ and $c_{3} = 13,$ then $10 \sum k = 1 c_{k}$ is equal to

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