Mathematics · 2019
JEE Main · 12 January 2019, Shift 1 · Q86
If the sum of the deviations of 50 observations from 30 is 50, then the mean of these observations is:
If the sum of the deviations of $\displaystyle 50$ observations from $\displaystyle 30$ is $\displaystyle 50$, then the mean of these observations is :
Official answer
(4)
$\displaystyle 31$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.