I was going through my organic notes and found this order of stability of carbocation:
3° benzylic > 2° benzylic > 2° allylic > 3° alkyl
I understand that all this is explained on the basis of combined result of resonance and inductive effect. What if one has to predict these?
For example, if I ask you where will you place 3° allylic and where will you place $\ce{Ph-(CH+)-C=R}?$ How to decide the order in these cases if this kind of question comes up in an exam?