Question

Solve the question given in the attachment....

Answer 1

heya guys
as this question belongs to set theory
so it can be solved by using Venn diagram
but here I am using another method

so let's start



as there are total 70 persons so n(s) = 70
s------ sample space

since 10 persons do not speak both Hindi and English
thus n(H union E) = n(s) - 10 = 70-10 = 60

H denotes Hindi
E denotes English
no. of person speaks Hindi are 45
n(H) = 45
no. of person who speaks English = 33
n(E) = 33

since ACC to set theory
n(H union B ) = n(H)+n(E) - n(H intersection E)


here n(H intersection E) denotes no. of person who speaks both Hindi and English


thus 60 = 45+33-n(H intersection E)
thus n(H intersection E ) = 18
thus total 18 persons speaks both Hindi and English

Answer 2

Bit interesting and competitive question mate!!!✌✌✌

Answer is 18

Refer attachment for understanding the process step by step.

Hope this Helps

If u find it as most helpful pls mark it as brainliest.