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Question
Difficulty Level:

Medium

MCQ

Consider the sum 252729211-\frac{2}{5}-\frac{2}{7}-\frac{2}{9}-\frac{2}{11}. Which expression is equal to the above sum?

Select all that apply :

j=14(22j+3)\sum_{j=1}^4(-\frac{2}{2 j+3})

j=14(24+j)\sum_{j=1}^4(-\frac{2}{4+j})

j=14(22+3j)\sum_{j=1}^4(\frac{2}{2+3j})

None of the above

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