What does the empty set symbol (∅) signify?

• A set containing zero

• A set with no elements

• A set with exactly one element

• A set with infinite elements

• A set containing negative numbers

What does the Cartesian product A × B consist of?

• Ordered pairs (a, b) where a belongs to A and b belongs to B

• The union of A and B

• The difference A - B

• The complement of A in B

• The intersection of A and B

What is the term for geometric shapes that repeatedly appear in natural patterns like snowflakes and crystals?

• Matrices

• Scalars

• Tessellations

• Vectors

• None of the above

What type of spiral arrangement appears in sunflower seed patterns?

• Concentric

• Radial

• Clockwise

• Counterclockwise

• Both c and d

What type of function ensures that each element in the codomain has at least one preimage?

• Injective

• Surjective

• Constant

• Quadratic

• None of the above

What does the complement of set A within a universal set U contain?

• Elements in both A and U

• Elements found only in A

• Elements in U but not in A

• Elements in both A and its subsets

• Elements that belong to the power set of A

What is the logical symbol for "and" (conjunction)?

• ∨

• ¬

• ∧

• →

Which step of Polya's problem-solving method involves rephrasing the problem in your own words?

• Understanding the problem

• Creating a strategy

• Implementing the plan

• Reviewing and interpreting the solution

• None of the above

Which of the following best describes a recurring design or repeated structure?

• Repetition

• Events

• History

• Pattern

• Sequence

In logic, which symbol represents negation?

• ∨

• ∧

• ¬

• →

• ↔