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Zetta Paper 1 · Q6

Paper 1Sequences & series

Evaluate

∑n=160001n(n+1).\sum_{n=1}^{6000}\frac1{n(n+1)}.
A60006001\frac{6000}{6001}
B60016000\frac{6001}{6000}
C59996000\frac{5999}{6000}
D60005999\frac{6000}{5999}
E59996001\frac{5999}{6001}

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