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h=' 2. Fift},r students are taking their nal exam. Three di'erent versions of the exam, A, B and C, have been prepared. Of these... 1'?

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h=' 2. Fift},r students are taking their nal exam. Three di'erent versions of the exam, A, B and C, have been prepared. Of these... 1'? copies of versions A and B each... and 16 copies of version U are used for the test. How many diEerent ways of \"testing the class\" were there

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