What is the function of piston rings in an internal

Read the given statement and conclusions carefully. Decide which of the given conclusions is/are true based on the statement.

Statement:

Statements: U $ N © C @ H © Y

Conclusions: 

 I. U © H 

II. C # U 

III.H © U

Statements: D > E > G ≤ H < I; G > P > F

Conclusions:

I. D > F

II. P < I

III. D > I

If '>' denotes '+', '<' denotes '-', '-' denotes '×', '×' denotes '÷', '÷' denotes '=', then choose the correct statement of the following.

Statements: Z ≤ O = Q < P; A = X > M = Y ≥ P

Conclusions:

I. A > O

II. Z < X

III. Q ≤ M

Statement: A < B; D ≤ C = B; I > C; E ≥ B

Conclusion:

I. I > E

II. E ≥ I

Statements: S > U ≥ V = X, Y < M < X, Y = T ≥ W

Conclusions:

I. S > Y

II. M ≤ U

III. W < X

Statement: C ≥ O ≥ S = Z ≤ N = R

Conclusions:

I. C > N

II. S ≤ R

Statements: Z % Y; X # W; U % V; W & V; Y @ X

Conclusions:     

Statements: B & A, A # O, O $ Z, Z @ S

Conclusions:

I. Z $ A

II. Z & A