Question

In a row of students, Deepak is seventh from the left and Madhu is twelfth from the right. If they interchange their positions, Deepak becomes twenty-second from the left. How many students are there in the row?

• A. $19$
• B. $31$
• C. $33$
• D. Can't be found

Answer 1

The correct option is C $33$

Deepak's new position is $22$ nd from left. But it is the same as Madhu's earlier position i.e. $12$ th from the right.
$\therefore$ there are ($22+12-1)$ i.e.$33$ boys in the row.