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Quiz: Sets, Relations and Functions

5 questionsNo time limitPass: 60%+10 XP on first pass

The language of discrete maths: sets and their operations (union, intersection, difference, power set, Cartesian product), relations and their properties (reflexive, symmetric, transitive, equivalence), and functions (one-one, onto, bijective) — with Python checks and exam-style counting.

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  1. Question 1

    If |A| = 5, how many subsets does A have?

  2. Question 2

    In the demo, how many students were in exactly one course (symmetric difference)?

  3. Question 3

    "Has the same remainder when divided by 3" on integers is:

  4. Question 4

    Which property does "divides" on {1,…,6} NOT have?

  5. Question 5

    A function f: A → B with |A| = 4 and |B| = 3 can never be: