In a group of students, 100 students know Hindi, 45 know English and 30 know both. Each of the students knows either Hindi or English. How many students are there in the group?
Answers
Answer:
As we know 30 students know hindi and english both so, we subtract 30 from the students who knows english and 30 from the students who knows hindi.
So,
The students who knows hindi=100-30=70
The students who knows english=45-30=15
The total students in the group=70+15=85
Given:
In a group of students, 100 students know Hindi, 45 know English and 30 know both. Each of the students knows either Hindi or English.
To Find:
How many students are there in the group?
Solution:
It is given that In a group of students, 100 students know Hindi, 45 know English and 30 know both and each of the students knows either Hindi or English, we can solve the above question by using the Venn diagram with 2 sets,
Draw 2 sets of Venn diagrams and name H for Hindi and E for English, now,
those who know only Hindi =100-30
=70
those who know only English=45-30
=15
So the total number of students in the group will be,
Total=70+15+30
=115
Hence, the total number of students in the group is 115.