Mathematics, 18.01.2020 12:31 jimmymurray29
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?
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In an examination of 140 students, 80 students passed mathematics,65 passed physics, 75 passed chemi...
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