WGU C959 - DISCRETE MATH QUESTIONS WITH COMPLETE ANSWERS

If every element in A is also an element of B, then A is a ______ of B


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subset




A = { 1, 2, 4, 11, 12 }
B = { 2, 4, 7, 8, 11 }

,A∩B=?

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{ 2, 4, 11 }




Use DeMorgans Law to solve: ¬∀x (P(x) ∧ Q(x))


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∃x (¬P(x) ∨ ¬Q(x))




The proposition p ⊕ q is true if...


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Exactly one of the propositions p and q is true but not both




E = { 3, 6, 9 }
F = { 4, 6, 16 }
|E| = |F|?
True or False


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True (the cardinality of F and E are the same)

, Is the following statement true?For any two sets, X and Y, if X ⊂ Y, then X ⊆ Y.
Yes
No


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Yes (If X ⊂ Y, then every element of X is also an element of Y, so X ⊆ Y.)




A = {a, b, c, d, e, f}
B = {d, e, f, g}
A⊕B=?


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{a, b, c, d, g}




Describe in words what this formula means: (a,b) ∈ A x B


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Ordered pair (a,b) are in the two sets A x B




A = {a, b, c, e, f}
B = {d, e, f, g}
A-B=?


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