Axe speaks truth only when Wye does not speak truth, then what is the probability that Zed does not speak truth on a question?

Case (1) : Wye does not speak truth So, Axe speaks truth here Probability that Zed does not speaks truth = 7/20 ×(1-3/5)×(1-5/6) = 7/300 Case (2) : Wye speaks truth So, Axe does not speaks truth here Probability that Zed does not speaks truth = (1-7/20)× 3/5 ×(1-5/6) = 13/200 Required Probability = 7/300+ 13/200 = 53/600

Which of the following symbols respectively should replace the question marks in order to make the expression V ≥ M and X ≤ H definitely true?

...Statements:

R ≤ A ≤ B > C = X < J < K = L

Which of the following expressions will be false if the expression Q < H = G ≤ E > U is definitely true?

Statements:

Z > N ≥ B = J ≤ M; Y ≥ U > N ≥ P

Conclusions:

I). P ≤ Z

II). M > Y

...Which of the following expressions will be true if the expression ‘D ≥ E < F = G’ is definitely true?

Statement: I ≤ S, S < X, X = F, F ≤ K

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

Which of the following expressions will be false if the expression V ≥ W > X = Y ≤ Z < A is definitely true?

Statements: E * M, M # N, N $ K

Conclusions: a) E * N b) M $ K

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