Math7-Review

A well-defined collection of distinct objects or ideas.

• Set

• Universal Set

• Cardinality

• Null Set

It is a common practice to list the elements of a set in __, and separated these elements by commas.

• parenthesis

• braces

• brackets

• two bars

A set with no element(s).

• zero set

• cardinality

• universal set

• null set

If a set contains many elements, we often use three dots called __ to indicate that there are elements in the set that have not been written down.

• infinity

• ellipsis

• undefined

• braces

It pertains to the number of elements in the set.

• infinity

• cardinality

• null set

• subset

The symbol used for 'is an element of'.

• ∈

• ∉

• ⊂

• ⊆

Given: U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9},

A = {1, 2, 3, 4, 5, 7},

B = {0, 2, 4, 6, 7, 8}, and

C = {1, 3, 4, 8}.

What is A U B ?

• {0, 1, 2, 3, 4, 6, 7, 8}

• {0, 2, 5, 6, 7, 9}

• {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}

• {0, 1, 2, 3, 4, 5, 6, 7, 8}

Given: U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9},

A = {1, 2, 3, 4, 5, 7},

B = {0, 2, 4, 6, 7, 8}, and

C = {1, 3, 4, 8}.

Find B – A.

• {0, 6, 8, 9}

• {1, 3, 5, 9}

• {1, 3, 5}

• {0, 6, 8}

Given: U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9},

A = {1, 2, 3, 4, 5, 7},

B = {0, 2, 4, 6, 7, 8}, and

C = {1, 3, 4, 8}.

Find (A∩C) ∩ (B∩C).

• { }

• {1, 3, 4, 8}

• {0, 2, 5, 6, 7, 9}

• {4}

Given: U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9},

A = {1, 2, 3, 4, 5, 7},

B = {0, 2, 4, 6, 7, 8}, and

C = {1, 3, 4, 8}.

Find B′.

• {0, 6, 8, 9}

• {1, 3, 5, 9}

• {0, 2, 5, 6, 7, 9}

• { }