Match List I (Figures of Categorical Syllogism) with List II (Structure):

List I

i.First

ii.Second

iii.Third

iv.Fourth

List II

a.P, S-M -> S-P

b.M, S-M -> S-P

c.P, M-S -> S-P

d.M, M-S -> S-P

Ai-a, ii-b, iii-c, iv-d ✓ Correct

Bi-b, ii-a, iii-d, iv-c

Ci-a, ii-d, iii-b, iv-c

Di-d, ii-a, iii-c, iv-b

Correct answer: (A) i-a, ii-b, iii-c, iv-d

Explanation

Each figure is fixed by where the middle term sits in the two premises.

In the first figure the middle is subject in the major and predicate in the minor, giving M-P, S-M, therefore S-P.

In the second figure the middle is predicate in both premises, giving P-M, S-M, therefore S-P.

In the third figure the middle is subject in both premises, giving M-P, M-S, therefore S-P.

In the fourth figure the middle is predicate in the major and subject in the minor, giving P-M, M-S, therefore S-P.

So the match is i with a, ii with b, iii with c, iv with d.

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