5) Evaluate the following infinite series exactly. 10, 20. 40 а) 5+—+ 3 9 27 27 81 243 -+=+: 5! b) 1+3+-+ +..= 2! 3! 4! 47? 167 647 + 2567* c) 1- + 2! 4! 6! 8!

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A: The solution is given as

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A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

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A: Since you have asked multiple questions in single request.We will be answering only first question.