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Question

Difficulty Level:

Medium

MCQ

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

Select all that apply :

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

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

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

None of the above

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