Q. 144.4( 36 Votes )

In a group of stu

Answer :

Let us assume U be the set of all students in the group


Let E be the set of students who know English


And, let H be the set of the students who know Hindi



Given that, number of students who know Hindi n (H) = 100


Number of students who knew English, n (E) = 50


Number of students who know both,


We have to find the total number of students in the group i.e. n (U)



= 100 + 50 – 25


= 125


Total number of students in the group = 125 students


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