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CONSTRUCTING A TEST- A TEACHER IS CONSTRUCTING A MATHEMATICS TESTCONSISTING OF 10 QUESTIONS. SHE HAS...

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CONSTRUCTING A TEST- A TEACHER IS CONSTRUCTING A MATHEMATICS TESTCONSISTING OF 10 QUESTIONS. SHE HAS A POOL OF 28 QUESTIONS, WHICH ARECLASSIFIED BY LEVEL OF DIFFICULTY AS FOLLOWS: 6 DIFFICULT QUESTIONS, 10AVERAGE QUESTIONS, AND 12 EASY QUESTIONS. HOW MANY DIFFERENT 10QUESTION TESTS CAN SHE CONSTRUCT FROM THE POOL OF 28 QUESTIONS IFHER TEST IS TO HAVE 3 DIFFICULT, 4 AVERAGE, AND 3 EASY QUESTIONS?

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