Free GMAT Practice Question

Question 1 of 1
ID: GMAT-QR-PS-069
Section: Quantitative Reasoning - Problem Solving (PS)
Topic: Fraction
Difficulty level: Hard

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In a certain sequence, the $n$th term is $\dfrac{1}{\left(2n-1\right)\left(2n+1\right)}$, so that the sequence begins $\dfrac{1}{1\cdot 3},\ \dfrac{1}{3\cdot 5},\ \dfrac{1}{5\cdot 7},\ ...$ What is the sum of the first $10$ terms of this sequence?

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