B = The set of all odd numbers greater than 29
Answers
Step-by-step explanation:
Set: A set is a collection of objects. Each object in a set is called an element or member of the
set. A set is usually given a capital letter name.
Example: Let A be the set of integers between 2 and 5 inclusive. List the elements of set A
and place the elements in set braces.
Note: This question wouldn’t make sense to ask unless A is a set. The bar is set quite low to
be a set. To be a set, A needs collection of objects (elements). There is no requirement on
what the elements need to be. The elements may be numbers, symbols, letters and words.
Really, they can be anything.
A is a collection of numbers (in this case the elements are numbers). Thus A is a set.
There are two words that are bolded in the description of set A that we need to understand
in order to list the elements that make up set A. The bolded words are: integers and
inclusive.
Integers are essentially numbers without decimals, whether positive or negative.
Integers = {…,-5,-4,-3,-2,-1,0,1,2,3,4,5…}
Inclusive means to include the first and the last number of the numbers that are described.
Thus set A contains numbers without decimals between 2 and 5 and I need to include the 2
and the 5.
Answer: A = {2,3,4,5} (I wrote the A to the left of an equal sign as it is the name of this set)
The curly braces in this definition are called set braces, and they are common to use when
listing the elements (members) of a set.
The order that the elements that set A are listed in is not important and has no effect on the set
itself. The set A described above can have its elements listed many ways. These are two more
ways to list the elements of the set A. These would both be correct answers to the example.
A = {4,2,3,5}
A = {5,4,3,2}