Question

A cinema hall has equidistant rows $1$ m apart. The length of the cinema hall is $287$ m and it has $287$ rows. From one side of the cinema hall, laughing gas $\left(N_{2}O\right)$ is released and from the other side, tear gas $\left(C_6{H}_{5}COC{H}_{2}Cl\right)$ is released. In which rows, spectators will be laughing and weeping simultaneously?

• A. ${187}^{th}$ from $N_{2}O$ and ${100}^{th}$ row from $C_6{H}_{5}COC{H}_{2}Cl$
• B. ${100}^{th}$ row from tear gas and ${187}^{th}$ from $N_{2}O$
• C. $287$ from $N_{2}O$ and $287$ from $C_6{H}_{5}COC{H}_{2}Cl$
• D. ${100}^{th}$ row from both

Answer 1

The correct option is A

${187}^{th}$ from $N_{2}O$ and ${100}^{th}$ row from $C_6{H}_{5}COC{H}_{2}Cl$

Therefore, the spectator from the side of N₂O in the 187^th row will be laughing and weeping simultaneously. Alternatively, the spectator from the side of tear gas in the 100^th row will be laughing and weeping simultaneously.