Question

In a group of persons travelling in a train, 8 persons can speak hindi, 15 can speak kannada and 10 can speak english. In that group no one can speak any language other than these three languages. 2 persons in the group can speak 2 languages and 3 persons can speak all 3 languages. How many persons are there in the group

Answer 1

english = e

kannada = k

hindi h

3 people can speak each language thus k=12,e=7,h=5

2 can speak 2 language

k=10,e=5

thus 5+10+5+3+2=25

Answer 2

Answer:

25

Step-by-step explanation:

In a group of persons travelling in a train, 8 persons can speak hindi, 15 can speak kannada and 10 can speak english. In that group no one can speak any language other than these three languages. 2 persons in the group can speak 2 languages and 3 persons can speak all 3 languages. How many persons are there in the group

as 3 people can speak all language

so 3 people will be subtracted from each language speaking

& 3 people will be added who speak all language

2 persons in the group can speak 2 languages

so 2 persons from two language will be deducted and two people will be added speaking two languages

8 + 15 + 10 - 3 - 3 - 3 + 3 - 2 - 2 + 2

= 25