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alukav5142 [94]
3 years ago
8

in an examination of 140 students, 80 students passed mathematics,65 passed physics, 75 passed chemistry, 33 passed mathematics

and physics while 30 passed mathematics and chemistry only, if 15 students passed all three courses and 91 students passed at least two courses , how many students failed all courses?​
Mathematics
1 answer:
Olegator [25]3 years ago
4 0

Answer:

only I think 10 failed all courses

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