Among the given compound choose the two that yeild same carbocation on ionization

Among the given compound choose the two that yield same carbocation on ionization.

Among the given compounds

Which of the following compounds gives the same carbocation on ionization?

The compound which gives the most stable carbocation is

Among the three compounds shown below, two yield the same product on reaction with warm HNO_(3) . The exception is :

Among the three compounds shown below, two yield the same product on reaction with warm HNO_3 . The exception is :

Among the given species the Resonance stabilised carbocations are: