
UCCM1363: Chapter 2
Authored by Amalina Jan
Mathematics
University
Used 2+ times

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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is a predicate?
A statement that is always true.
A sentence that contains variables and becomes a statement when values are substituted.
A type of mathematical function.
A statement that cannot be evaluated.
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What does the universal quantifier '∀' signify?
At least one value is false.
For all values.
There exists at least one.
None of the above.
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is the truth value of the statement '∀x ∈ ℤ, x + 1 < 4'?
True for some integers only.
True
False
Undefined
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is a counterexample?
A value that makes a statement true.
A value that makes a universal statement false.
An example that illustrates a concept.
A type of mathematical proof.
5.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
What does the existential quantifier '∃' mean?
Any values.
There exists at least one.
For some values.
For all values.
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following is a correct negation of the statement '∀ primes p, p is odd'?
∀ primes p, p is even.
∀ primes p, p is not odd.
∃ a prime p such that p is not odd.
∃ a prime p such that p is odd.
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is the truth value of '∃x ∈ ℝ such that x^2 + 1 = 0'?
True
False
Undefined
True for some real numbers.
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