Figure 1 shows the structure of different level of carbocations like, primary, secondry, tertiary in completed form.
Figure 2 shows that the stability of carbocations for primary, secondry, tertiary
Primary carbocation; A primary carbocation is one in which there is one type of carbon group attached to the carbon bearing the positive charge.
Secondary carbocation; A secondary carbocation is one in which there are two carbons attached to the carbon bearing the positive charge.
Tertiary carbocation; a tertiary carbocation is one in which there are three carbons attached to the carbon bearing the positive charge
Actually more carbons attached to the carbon bearing a positive charge more stablizes becouse of inductive effect.