MATH 7 - 1ST QUARTER EXAM REVIEWER

It refers to the number of elements in the set.

• Set

• Cardinality

• Subset

• Venn diagram

If A={x|x is a multiple of 10 less than 100}, which of the following is an element of A?

• 50

• 75

• 15

• 0

If X={4, 8, 12, …, 80}, what is n(X)?

• 4

• 10

• 20

• not defined

If U={2, 4, 6, 8, 10,…}, which of the following is a subset of U?

• A={1, 2, 4, 6, 8}

• C={21, 41, 61, 81,…}

• C={10, 20, 30}

• D={a, b, c,…}

What is (A∪B)'?

• ∅

• U

• A

• B

What is A∩D?

• {11, 17}

• {11, 13, 15, 17, 19, 14, 20}

• { }

• {14, 20}

How many students took the guitar lessons ONLY?

• 17

• 28

• 12

• 50

How many students are there?

• 50

• 17

• 12

• 40

How many students did not take the Singing lessons?

• 11

• 27

• 17

• 10

How many students took the Guitar or Singing lessons?

• 28

• 40

• 29

• 50