In a group of students, 100 students know Hindi, 50 know English and 25 know both. Each Of the students knows either Hindi or English. How many students are there in the group?
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Number of students who knows Hindi = 100
Number of students who knows English = 50
Number of students who knows both = 25
Find the number of people in the group:
Number of students who knows Hindi only = 100 - 25 = 75
Number of students who know English only = 50 - 25 = 25
Number of students who knows both = 25 (Given)
Number of students = 75 + 25 + 25 = 125
Answer: There are 125 students in the group.
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HEY DEAR ... ✌️
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Here's , Your Answer :-
=) Let H and E is the set of students who know Hindi and English respectively.
=) H for hindi and E for English .
=) n(H) = 100, n(E) = 50 and n(H ∩ E) = 25
=) Use formula ,
=) n ( H ∪ E ) = n (H ) + n ( E ) – n ( H ∩ E)
=) Plug the values we get,
=) [100 + 50 - 25]
=) 125 . (ans.)
Therefore, there are 125 students in the group .
_____________________
_____________________
HOPE , IT HELPS ... ✌️
_________________________
_________________________
Here's , Your Answer :-
=) Let H and E is the set of students who know Hindi and English respectively.
=) H for hindi and E for English .
=) n(H) = 100, n(E) = 50 and n(H ∩ E) = 25
=) Use formula ,
=) n ( H ∪ E ) = n (H ) + n ( E ) – n ( H ∩ E)
=) Plug the values we get,
=) [100 + 50 - 25]
=) 125 . (ans.)
Therefore, there are 125 students in the group .
_____________________
_____________________
HOPE , IT HELPS ... ✌️
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