kwizNET Subscribers, please login to turn off the Ads!
Email us to get an instant 20% discount on highly effective K-12 Math & English kwizNET Programs!

Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 8 - Mathematics
4.24 The Null Set or Empty Set or Void Set

Null Set:
A null set is a set with no elements in it.

The null set is some times also denoted as empty set or void set. The null set is denoted by . It cal also denoted as {}.
Therefore, = {}.

Things to be noted:

1. , {0} and {} are three different sets.
2. Empty set is denoted by or {}.
3. {0} is a set containing the single element 0 in it.
4. {} is a set whose one element is .
Therefore {0} and {} are not null sets.

1. There are no natural numbers that are less than zero.
2. There are no odd numbers that have remainder zero when divided by 2.

Directions: State which of the given sets are empty. Also write at least 10 examples of your own.
Q 1: B = {x/x+5 = 5}, x W.
An empty set
Not an empty set

Q 2: The set of even prime numbers greater than 3.
An empty set
Not an empty set

Q 3: B = {x/x+8 = 8}, x Q.
An empty set
Not an empty set

Q 4: The set of straight lines passing through a pint.
Not an empty set
An empty set

Q 5: B = {x/x+5 = 5}, x N.
An empty set
Not an empty set

Q 6: The set of all triangles in a plane having the sum of three angles is less than 180.
An empty set
Not an empty set

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!

Subscription to kwizNET Learning System offers the following benefits:

  • Unrestricted access to grade appropriate lessons, quizzes, & printable worksheets
  • Instant scoring of online quizzes
  • Progress tracking and award certificates to keep your student motivated
  • Unlimited practice with auto-generated 'WIZ MATH' quizzes
  • Child-friendly website with no advertisements
  • Choice of Math, English, Science, & Social Studies Curriculums
  • Excellent value for K-12 and ACT, SAT, & TOEFL Test Preparation
  • Get discount offers by sending an email to

Quiz Timer