JEE PYQ: Statistics Question 18
Question 18 - 2020 (07 Jan Shift 1)
If the variance of the first $n$ natural numbers is 10 and the variance of the first $m$ even natural numbers is 16, then $m + n$ is equal to ____.
Show Answer
Answer: 18
Solution
$n = 11$, $m = 7$. $m+n = 18$.