If 12 $ 18 = 10, 15 $ 18 = 11 then what is the value of

Statements: K * D, D $ N, N % M, M © W

Statements: 

X % Y % Z $ I @ L 

Conclusions: 

I. Z * X 

II. L © Z 

III. L * X

Statements: R ≥ S; T = U < O; R ≥ O; V > T

Conclusions:

I. V > O

II. R > T

III. S > V

Statements: R @ D, D $ J, J # M, M @ K

Statements: E ≤ F = G ≤ H = I, M < L ≤ G = K ≥ J

Conclusion:

I. I ≤ L

II. I > M

III. E ≥ J 

In which of the following expressions will the expression ‘M ≥ N ' and ‘Q < O’ be definitely true?

Statements: P % Q, Q & R, R @ S, S # T

Conclusions: I. T & R                        II. P # S

Statements:  A @ D % J #  K & L $ U  # O; V $ J # K

Statements: O > M = Q > S; M ≥ K > A; Q ≤ O < E