Question

A boxing coach selected $26$ students of age $10$, $25$ students of age $9$, $20$ students of age $13$ and $5$ students of age $15$ for boxing training. He arranges the data in a tabular form as


Which of the following is incorrect about the unknown values in the above chart?

• A. $a=10$
• B. $b=25$
• C. $c=13$
• D. $d=15$

Answer 1

The correct option is D $d=15$

The boxing coach selected the following students of different age groups for training:
$\bullet$ $26$ students of age $10$,
$\bullet$ $25$ students of age $9$,
$\bullet$ $20$ students of age $13$,
$\bullet$ $5$ students of age $15$

The tabular representation of data of the selected students is


By comparing the above table and the table with unknowns in the question, we can conclude that $a=10$, $b=25$, $c=13$ and $d=5$.

$\therefore$ Option (d.) with $d=15$ is incorrect.