Question

Which of the following is an example of an empty set?

Answer 1

Any Set that does not contain any element is called the empty or null or void set. The symbol used to represent an empty set is – {} or φ. Examples: Let A = {x : 9 < x < 10, x is a natural number} will be a null set because there is NO natural number between numbers 9 and 10.

Answer 2

The empty, null, or void set is any set that does not include any elements. An empty set is represented by the symbol – or. Let A = x : 9 x 10, where x is a natural number; the set will be null since there is no natural number between 9 and 10.

I The set of people who live on the Moon, which is now empty. (ii) A year's worth of months with 32 days. (iii) Empty sets include the set of English words beginning with [x] and ending with [Q], for example.