The equilibrium constants for the reactions Zn(s)+Cu2+(aq)⇔Zn2+(aq)+Cu(s), Cu(s)+2Ag(aq)+⇔Cu(aq)2++2Ag(s) are K1 and K2 respectively then the equilibrium constant for the reaction Zn(s)+2Ag(aq)+⇌Zn(aq)+2+2Ag(s) will be