Question

In a class of 120 students, 40 students passed in English, 60 students passed in Hindi, 40 students passed in Punjabi. Each student passed in at least one subject. 10 students passed in both English and Hindi, 12 students passed in both Hindi & Punjabi, 15 students passed in Punjabi & English . How many students passed in all the subjects?​

Answer 1

Answer:

hiii

your answer is here !

Step-by-step explanation:

=> Let A be the set of people who passed in English

=> Let B be the set of people who passed in Hindi

=> Let C be the set of people who passed in Punjabi

=> A∪B∪C = A + B + C - (A n B + B n C + C n A) + (A n B n C)

=> 120 = 40 + 60 + 40 -10-12-15 + x

=> X = 120 – 103

=> X = 17

=> follow me !

Answer 2

Answer:

let pass students bexley

120=40+60+40-10-12-15+x

x=17