Question

In a class, 6 students can speak gujarati, 15 can speak hindi and 6 can speak marathi. If two students can speak two languages and one student can speak all the three languages, then how many students are there in the class

Answer 1

30 students are there in a class the answer came after calculating the students
formula. 6+15+6+2+1

Answer 2

Step-by-step explanation:

Let a = Speaks one language

Let b = Speaks two language

Let c = Speaks three language

then a + 2b + 3c = 6 +15+6

a + 4 + 3 = 27

a = 20

∴ Total number of persons in the group = 20 + 2 + 1 = 23

• Answer 23