A) 80 per cent
B) 40 per cent
C) 60 per cent
D) 70 per cent
E) 30 per cent
Correct Answer: C
Solution :
\[n(C)=20,n(B)=50,n(C\cap B)=10\] \[\therefore \] \[n(C\,or\,B)=n(C\cup B)\] \[=n(C)+n(B)-n(C\cap B)\] \[=20+50-10\] \[=60\text{ }per\text{ }cent\]You need to login to perform this action.
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