Mathematics · 2014
JEE Main · 19 April 2014, Shift 1 · Q69
Let f(n)=[1/3+(3 n)/100] n, where [n] denotes the greatest integer less than or equal to n. Then Σ_n =1^56 f(n) is equal to:
Let $\displaystyle f(n)=\left[\frac{1}{3}+\frac{3 n}{100}\right] n$, where $\displaystyle [n]$ denotes the greatest integer less than or equal to $\displaystyle n$.Then $\displaystyle \sum_{\mathrm{n}=1}^{56} f(n)$ is equal to :
Official answer
(4)
$\displaystyle 1399$
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JEE Main 2014 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.