MATH_110_MODULE_9_EXAM_QUESTIONS_AND_ANSWERS_2026_COMPLETE_EXAM

MATH 110 MODULE 9 EXAM
QUESTIONS AND ANSWERS 2026
COMPLETE EXAM PREP WITH
VERIFIED SOLUTIONS
◉ elements.
Answer: the parts of a set


◉ word description.
Answer: Describing the members of the set using words. "the set of
numbers..."


◉ roster method.
Answer: Listing each item in a set within braces {}
ex. {1,2,3,4,5}


◉ set builder notation.
Answer: {x|x E N and x ≥ -5}


◉ natural numbers (N).
Answer: counting numbers. 1,2,3,4,5,6...


◉ whole numbers (W).
Answer: Natural numbers ( counting numbers) and zero; 0, 1, 2, 3...

, ◉ integers (I).
Answer: The set of whole numbers and the negatives


◉ rational numbers (Q).
Answer: integers plus fractions or decimals that repeat or terminate. (ex.
1/3, 3/2)


◉ irrational numbers (cursive i).
Answer: all numbers that are not fractions or decimals that don't repeat
or terminate. (ex: pi, the square root of 2)


◉ real numbers.
Answer: every number ever


◉ well-defined.
Answer: when it is clear whether any object is an element of the set. (ex.
the set of good tv shows = NOT well defined. the set of rational numbers
= WELL DEFINED)


◉ cardinality.
Answer: the number of elements in a set, denoted n(A).


◉ cardinality of Ø.