Which one of the following techniques is used to monitor

Statements: 

A $ B * X © Y @ Z 

Conclusions: 

I. X @ Z 

 II. Z * A 

III. Z % X

Statements:  T < U = S ≤  O, C > Y ≥ X, T > K = X 

Conclusions

I. O > K

II. C < T

III. U > K

Statements: N = Q < X ≤ L, L > T = G ≥ E

Conclusions:

I. L ≥ Q

II. G > X

III. L > N

Statements: U $ N © C @ H © Y

Conclusions: 

 I. U © H 

II. C # U 

III.H © U

Statements: P ≥ Q > S< T > R = U

Conclusions: I. P < S

II. U = S

Statements:

A ≥ T > I, D > I, U = P ≥ I

Conclusions:

I. U > D

II. A > I

Statements:

P > Q ≥ M ≤ N; Y ≥ Z ≥ A = P

Conclusion:

I. Y > N

II. N ≥ Y

Statements: W < R = T < Y = S = U ≥ V ≥ H = X

Conclusions:

I. S ≥ X

II. U > T

III. W < Y

In which of the following expressions will the expression ‘D < F’ be definitely true?