Mathematics · 2013
JEE Main · 9 April 2013, Shift 1 · Q76
The sum of the series: 1+1/(1+2)+1/(1+2+3)+… … upto 10 terms, is:
The sum of the series :
$$1+\frac{1}{1+2}+\frac{1}{1+2+3}+\ldots \ldots \text { upto } 10
$$
terms, is :
Official answer
(3)
$\displaystyle \frac{20}{11}$
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JEE Main 2013 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.