REVIEW: Set Theory 1 - Notation

Which is written in proper set notation?

• ( red, blue, green )

• ( blue; green; red )

• { blue; green; blue }

• { blue, green, blue }

• { red, green, blue }

Which symbol translates to "is an element of"

Which symbol translates to "is an superset of or is equal to"

Which symbol translates to "is an subset of or is equal to"

Which symbol translates to "contains the element"

Which symbol translates to "union"

Which symbol translates to "intersection"

Which symbol translates to "difference"

• absolute value

• cardinality

• union

• intersection

• complement

Answer explanation

If x is a real number, then:

| x |

is read as "the absolute value of x". However, given that A is a set :

| A |

is read as "the cardinality of A".

• absolute value

• cardinality

• union

• intersection

• complement