Question

In a examination 35% of students passed in nepali only and 25% passed in mathematics only. If 20% of students were failed in both subject then

Answer 1

Answer:

nepali and mathematicis

Answer 2

Step-by-step explanation:

n(N)=35%

n(M)=25%

n(NUM)complement=20%

Now,

i. n(NnM)

n(U)=n(N)+n(M)+n(NnM)+n(NUM)complement

or, 100%=35%+25%+x+20%

or,100%=35%+25%+20%=x

or,100%-80%=x

or,20%=x

Therefore, 20% of students passed in both subject.

ii. n(M)= n(M)+n(NnM)

=25%+20%

=45%

Therefore 45% of students passed in Mathmatics