Question

C={x:x is a perfect square number , 40 is less than x and grater than 50. it is empty set or not​

Answer 1

Answer:

no it is not an empty set because it (49)

Answer 2

Answer :

Perfect square numbers are numbers whose square roots are whole numbers. Like : √4 = 2, √9 = 3, etc.

Now, A number between 40 and 50, which is a perfect square number is 49, because √49 = 7.

Hence, C = {x : x is a perfect square number , x is less than 40 and grater than 50} = {49}.

Hence, The set is not empty.

More information -

• Empty set is a set which has no elements.
• Equal sets are sets which have same number of elements and same elements.
• Equivalent sets are sets which have same number of elements.
• Cardinality refers to the number of elements in a set.
• Singleton set is a set with one element.
• Finite set is a set with finite number of elements.
• Infinite set is a set with infinite number of elements.