A chamber contains a mixture of CO2, CO and O2 is in equilibrium at a specified temperature

Question:

A chamber contains a mixture of CO2, CO and O2 is in equilibrium at a specified temperature and pressure. How will
(a) Increasing the temperature (T) at constant pressure and
(b) Increasing the pressure (p) at constant temperature affect the number of moles of CO? (Enter 1 if increases, 2 if decreases, and 3 if no change)