JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

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The sum of the series

\frac{1}{1.2}+\frac{1}{2.3}+\frac{1}{3.4}+\ldots \ldots .+\frac{1}{n(n+1)}

, is

View answer and explanation

Correct option: B

1-\frac{1}{n+1}

Option B (

1-\frac{{1}}{{n+1}}

) is correct because the series telescopes, leaving only the first and last terms after cancellation.

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