Math 7 Operation on Sets

If 2 sets A and B are given, what operation was used when the set consist all the elements from A and B.

• Intersection of A and B

• Union of A and B

• Complement of A

• Complement of B

If U = {1,2,3,4,5} and A = {2,4} then what is A' ?

• {2,4,5}

• {2,4}

• {1,2,3,4,5}

• {1,3,5}

How many elements in the given set {1, 2, 3, 6, 8} ?

• 4

• 5

• 6

• 7

The union of set A and B is denoted by

• A + B

• A - B

• A∩B

• A∪B

If X = {1, 2, 3, 4, 5} and Y = {2, 4, 5, 6, 8} , what is Y - X ?

• {4, 5}

• {1, 6}

• {6, 8}

• {1, 3}

If A = {1, 2, 3, 4} and B = {4, 5, 6, 7} then A∪B should be:

• {2, 3, 4, 5, 6, 7}

• {1, 2, 3, 4, 5, 6, 7}

• {4}

• {1, 2, 3, 5, 6, 7}

The intersection of set A and B is denoted by

• A∩B

• A∪B

• A + B

• A - B

It is a set with no element.

• subset

• power set

• empty set

• singleton set

Complement of a set B in denoted by:

• B'

• B°

• {B}

• B²

A = {2, 3, 4, 5, 6} and B = {4, 5, 6, 7}.

What is A∩B ?

• {2, 3, 4, 5, 6, 7}

• {4, 5, 6, 7}

• {4, 5, 6}

• { }