MATH 110 WEEK 5 LIMESPRING II 2026 REVISION WORKBOOK STEP BY STEP PROBLEMS A+

MATH 110 WEEK 5 LIMESPRING II 2026
REVISION WORKBOOK STEP BY STEP
PROBLEMS A+

◉ What are Integers. Answer: All numbers negative infinity through
positive infinity


◉ What are Rational Numbers. Answer: The set of all fractions of
Integers


◉ What are Real Numbers. Answer: All the numbers on the number
line


◉ What are Irrational Numbers. Answer: Any real number that is
not rational


◉ What is cardinality?. Answer: The number of elements in a set


◉ How is cardinality expressed?. Answer: |A|


◉ Every set lives within a what?. Answer: Universal Set (U)

, ◉ What is the Compliment of a set, and how is it expressed?.
Answer: The set of all elements of the universe that are not elements
of A; A'


◉ When is set A a Subset of set B?. Answer: If all the elements of set
A are also in set B


◉ What is the symbol for Subset?. Answer:


◉ When is set A a Proper Subset of Set B?. Answer: If A is a subset of
B and they are not the same.


◉ What is the symbol for a Proper Subset?. Answer:


◉ The Empty set is a subset of which set?. Answer: Every set


◉ What is the Intersection of sets A and B?. Answer: The set of all
elements common between both A and B


◉ What is the symbol for Intersection?. Answer:


◉ When are sets A and B Disjoint?. Answer: If there are no common
elements between sets A and B