But it is showing wrong

Dear student,

total number of person = 250 let number of person speaking tamil = n (A) let number of person speaking marathi = n (B) = 120 So number of people speaking both tamil and marathi, n (A \cap B) = 50 Since 120 people are speaking marathi only so rest will be speaking either tamil or both tamil and marathi so, so number of these people = 250 - 120 = 130 So number of people speaking tamil = 130 - people speaking both = 130 - n (A \cap B) = 130 - 50 = 80 Therefore number of people speaking tamil = 80

Regards