Question

The final marks in mathematics of $30$ students are as follows:
$53,61,48,60,78,68,55,100,67,90$
$75,88,77,37,84,58,60,48,62,56$
$44,58,52,64,98,59,70,39,50,60$
If $40$ is the pass mark how many have failed ?

Answer 1

Given Marks of $30$ students

$53,61,48,60,78,68,55,100,67,90$

$75,88,77,37,84,58,60,48,62,56$

$44,58,52,64,98,59,70,39,50,60$

$37,39$ are the $2$ observations less than $40.$

So $2$ students are failed.