The volume of air remaining in the lungs and the dead space even...

The volume of air remaining in the lungs and the respiratory passages (dead space) even after a forceful or maximum expiration is called the Residual Volume (RV).

The average value of Residual Volume in a healthy human adult is $1100$ mL to $1200$ mL.

Other respiratory volumes are:
Tidal Volume (TV) $\approx 500$ mL
Expiratory Reserve Volume (ERV) $\approx 1000$ to $1100$ mL
Inspiratory Reserve Volume (IRV) $\approx 2500$ to $3000$ mL

Answer: 1100-1200