Question

In a competitive exam 50 Students passed in English. 60 students passed in Mathematics. 40 students passed in both subjects. None of them fail in both the subjects. Find the total number of students? *​

Answer 1

Answer:

svsbebehe

Explanation:

hhwhwhwsysgsgsg

Answer 2

Answer:

Explanation:

let the number of students who passed english be n(E)

let the number of students who passed maths be n(M)

let the number of students who passed both english and maths be n(M∩E)

none of them fail in both subjects means that everyone passes in one of the two subjects

so  now our aim is to find n(M∪E) which is equal to the total number of students (each student passes any of the two subjects,[i hope you understand])

so we know the formula of

n(M∪E)= n(M)+n(E)-n(M∩E)=60+50-40=70 students

if you draw venn diagram,you will surely get a clear idea

hope this helps you

thank you

so we know the formula of au