Which device was invented by Carl Friedrich Gauss and

Statement: I ≤ S, S < X, X = F, F ≤ K

Conclusion: I. K > I II. I < X

Statements: M = N ≤ P = C > G, D ≥ M > T = F

Conclusion:

I. D ≥ N

II. N > F

III. F < P

Statements: A < B > C; D < E ≤ B; A > F

Conclusions:

I. B > F

II. D < A

III. C < F 

Statements: M > P > Q < R = T; A < B ≤ C = P; L > N = T > X

Conclusions:

I.   R > P

II.   R < P

Statement: K = B; D ≥ L ≥ T ≥ B

Conclusion: I. D > K II. D = K

Statement: M < N; L ≥ U; L ≥ Q; U > N ≥ T

Conclusion:

I. N > Q

II. Q > T

Statements:

A < W ≤ T < Y = O; V < S > K ≥ F > O

Conclusions:

I).  W < S

II).  Y ≥ K

Statements: H > S ≥ F = B ≤ U≤ T; E ≤ B ≤ K

Conclusions:I. K > F II. K = F

Which of the following expressions will be true if the expression Q ≥ M = R > F = E ≤ X is definitely true?

Statements: H # I, I @ J, J $ P

  Conclusions: a) H # J      b) H # P