Verbal Logic

Question 1

Premise: If A, then B

Answer 1

Certain conclusion: If not B, then A

Question 2

Premise: All A are B

Answer 2

Certain conclusion: All non-B are non-A

Question 3

Premise: All A are B
Premise: All B are C

Answer 3

Certain conclusion: All A are C
Certain conclusion: No non-C is an A

Question 4

Premise: Some A are B
Premise: All B are C

Answer 4

Certain conclusion: Some B are A
Certain conclusion: Some A are C
Certain conclusion: Some C are A