Determine if the following syllogism is valid or invalid: Al…

Determine if the following syllogism is valid or invalid: All persons who promise more than they can deliver are persons who overestimate their own abilities. All presidential candidates are persons who promise more than they can deliver. All presidential candidates are persons who overestimate their own abilities.

Which rule, if any, does the following syllogism violate?  …

Which rule, if any, does the following syllogism violate?   All persons who promise more than they can deliver are persons who overestimate their own abilities. All presidential candidates are persons who promise more than they can deliver. All presidential candidates are persons who overestimate their own abilities.