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  • 24-02-2020
  • History
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How many of the students in a certain class are taking both a history and a science course? (1) Of all the students in the class, 50 are taking a history course. (2) Of all the students in the class, 70 are taking a science course.

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nsaleh56754 nsaleh56754
  • 24-02-2020

and the best

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