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QUESTION
a school sport team contains 68 students, 33 do field events, 40 do track events, 23 do swimming, 14 do both field and track events, 8 do both swimming and field events. If 15 students do field events
a school sport team contains 68 students, 33 do field events, 40 do track events, 23 do swimming, 14 do both field and track events, 8 do both swimming and field events. If 15 students do field events only, and 10 do both swimming and track events, how many students do [a]swimming only [b] track events only [c]all the three
