Question

in a survey, after their SEE,190 students wanted to be an engineer, 160 wanted to be a doctor and 120 wanted to be both. if 300 students were interviewed, draw a Venn-diagram and find the number of student who wanted to be neither of them.

Answer 1

Explanation :

n(U)= 300

n(E)= 190

n(D)= 160

n(E n D)=120

So, n(E)o= n(E)-n(E n D)

= 190- 120

= 70

n(D)o= n(D)-n(EnD)

= 160- 120

= 40