(6-10) (i) All belts are rollers → Universal Affirmative (A-type) (ii) Some rollers are wheels → Particular Affirmative (I-type) (iii) No wire is cable → Universal Negative (E-type) (iv) Some wires are not cables → Particular Negative (O-type) Some rollers are wheels All wheels are mats. I + A ⇒ I-type of Conclusion “Some rollers are mats.” Conclusion I is Converse of it. Conclusion IV is Converse of the first Premise