exam Maths Puzzle Numerical Ability

Please can someone help me. I am having trouble with this problem on a homework sheet.

3.) Write the series in summation notation. Use the index i and let i begin at 1 in each

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exam Other Question

What is the domain of g(x)=ln(x-4).Please explain how you obtained your answer. Once again, I need help in solving and understanding a statistics problem. Thanks in advance for your assistance in this matter!
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