I have purchased a wrong door , Im a carpenter and don't know if its possible to change the door from a Right hand inward swing to a Lt hand reverse swing door ?
a Right Hand Reverse door is the same as a Left Hand (push) door. You will have to flip the frame around or re-prep it for the strike and hinges though.
It will work just fine but do you want your hinges on the outside? If this is an interior door no big deal. If it is an exterior door I could get in your house with a pick and hammer.