CBSE 2023 · Region 1 · Set 1 · Q11

The distribution below gives the marks obtained by $\displaystyle 80$ students on a test :

Marks	$\begin{array}{c}\text { Less }
\text { than } 10\end{array}$	$\begin{array}{c}\text { Less }
\text { than } 20\end{array}$	$\begin{array}{c}\text { Less }
\text { than } 30\end{array}$	$\begin{array}{c}\text { Less }
\text { than } 40\end{array}$	$\begin{array}{c}\text { Less }
\text { than } 50\end{array}$	$\begin{array}{c}\text { Less }
\text { than } 60\end{array}$
Number of Students	$\displaystyle 3$	$\displaystyle 12$	$\displaystyle 27$	$\displaystyle 57$	$\displaystyle 75$	$\displaystyle 80$

The modal class of this distribution is :