Let's assume we have two sets
First set is A
second set is B
we know that
Union of two sets is the set that contains elements or objects that belong to either A or to B or to both.
So, it does not leave any element from any set
So, for union of two sets to become null , sets A and B won't have any element
For example:
set A={ }
set B= { x : for all real value of x ,x^2 +1=0 }
Since, set B won't have any elements
so,
A∪B=Ф
Yes, the union of two sets have a solution of a null set........Answer
Answer: 88%
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One way:

(360 degrees in a circle which is what a pie chart is)
or

x 360
which is

= 144⁰ angle
Answer:
No
Step-by-step explanation:
Answer:
5
Step-by-step explanation:
the order of the surd is 5