If $\text{mean} = (3 \text{median} - \text{mode}) k$,then the value of $k$ is

The mode of the following frequency distribution is:

Class	$0-5$	$5-10$	$10-15$	$15-20$	$20-25$	$25-30$
Frequency $(f_i)$	$3$	$4$	$7$	$11$	$2$	$5$

Let $a_1, a_2, \dots, a_{101}$ be a group of real numbers such that $a_i > a_{i+1}$ for all values of $i$ and the mean square deviation of the group is minimum about the number $a_{51}$. Then the mode of the group will be:

What is the relation between the mean and the median of a discrete data set?

In any discrete series (when all values are not same),the relationship between $M.D.$ about mean and $S.D.$ is:

In a moderately asymmetrical distribution,the mode and mean are $7$ and $4$ respectively. The median is: