Sets 1st Year

List the elements of the following sets using the { } notation

A = {the first five letters of the English alphabet}

Write the set with a space and comma between each element e.g. {x, y, z}

(a)  

List the elements of the following sets using the { } notation:

B = {the seasons of the year}

Write the set with a space and comma between each element e.g. {x, y, z}

(a)  

State whether each of the following are true or false:

3 ∈ {1, 3, 5, 7, 9}

• True

• False

State whether each of the following are true or false:

v ∈ {a, e, i, o, u}

• True

• False

State whether each of the following are true or false:

Munster ∈ {counties of Ireland}

• True

• False

If A = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}

Write down the elements of the set of two digit numbers in A

Write the set with a space and comma between each element e.g. {x, y, z}

(a)  

If A = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}

Write down the elements of set of odd numbers less than 6 in A

Write the set with a space and comma between each element e.g. {x, y, z}

(a)  

If A = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}

Write down the elements of the set of numbers in A which are divisible by 3

Write the set with a space and comma between each element e.g. {x, y, z}

(a)  

The green shading of the picture above represents

• A ∩ B

• A U B

• (AUB)’

• A'

The red shading of the picture above represents

• A ∩ B

• A U B

• (AUB)’

• A'