To determine the number of electrons transferred in the redox reaction involving AgNO3, Na, and NaNO3 with Ag as the product, we need to identify the oxidation and reduction half-reactions.

Oxidation half-reaction (loss of electrons):

Na → Na+ + e-

Reduction half-reaction (gain of electrons):

Ag+ + e- → Ag

To balance the overall redox reaction, we need to ensure that the total number of electrons lost in the oxidation half-reaction is equal to the total number of electrons gained in the reduction half-reaction. In this case, one electron is lost in the oxidation of Na, and one electron is gained in the reduction of Ag+.

Therefore, the number of electrons transferred in the redox reaction AgNO3 plus Na NaNO3 Ag is one electron.