Q. 74.0( 68 Votes )

Let all the students of a class is a Universal set. Let set A be the students who secure 50% or more marks in Maths. Then write the complement of set A.

Answer :

Let U be the universal set.

Then, U = Set of all students of a class


A = Set of students who secure 50% or more marks in Maths

We know that a set A’ is said to be the complement of the set A if it contains all the elements of the universal set U, which are not in the set A.


The complement of set A is:


A’ = Set of all students who do not secure 50% or more marks in Maths


Or A’ = Set of all students who secured less than 50% marks in Maths
∴ A'= U - A

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