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THE PROPOSITION CAN BE TRUE
THE PROPOSITION CAN BE TRUE
SOLUTION MANUAL FOR DISCRETE MATHEMATICS 7TH EDITION BY JOHNSONBAUGH
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78. The proposition can be true. Let P (x, y) be the statement x ≤ y and let the domain of discourse
be Z
+
× Z
+
. Then ∀x∀yP (x, y) is false, but ∃x∀yP (x, y) is true.
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78.
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SOLUTION MANUAL FOR DISCRETE MATHEMATICS 7TH EDITION BY JOHNSONBAUGH