Set theory
A group of "40" students appeared in an examination of "3" subjects - Mathematics,Physics and Chemistry.It was found that all students passed in atleast one of the subjects,"20" students passed in Mathematics,"25" students passed in Physics,"16" students passed in Chemistry,atmost "11" students passed in both Mathematics and Physics,atmost "15" students passed in both Physics and Chemistry, atmost "15" students passed in both Mathematics and Chemistry.The maximum number of students passed in all the three subjects is_??
Hey! Can anyone please explain me the logic behind solving the question, coz there are a couple of videos on youtube on this, but I couldn't understand from any them so to speak😞
9 Replies
@Apu
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But the ans cannot be 20 since M intersection P is 11 (MUPUC) cannot be 20
It is limited by M intersection P
So its maximum value can be 11 only
Not more than that
@@Baruah_A
I understand till this part..the question comes, what next now?? And btw, the answer is 10
Are u sure the ans is not 11?
Yess... Actually the quesn was from JEE Mains 2024 paper, and from most of the solutions on google, i can tell you that the answer is 10 @Real potato
Can u share any solution in which the ans is given as 10?
I searched up on google im getting 11 only
I somehow finally got the answer. Is it correct??
