InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
There are 12 teachers in a school who can teach Maths or Physics. Out of these, 6 teach Maths and 4 teach Physics and Maths both. Find how many teachers teach Physics ? |
|
Answer» Let A = set of reachers who teach Maths and B = set of teachers who teach Physics Now, `n(A cupB)=12` `n(A)=6` and `n(A capB)=4` Now, `n(A cup B)=n(A)+n(B)-n(A cap B)` `rArr12=6+n(B)-4` `rArrn(B)=10` `:.` No, of teachers who teachers who teach Physics = 10. |
|