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Math and Logic Puzzles Collection

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Multiple Choice

Using the digits 1 up to 9, two numbers must be made. The product of these two numbers should be as large as possible. All digits must be used exactly once. Which are the requested two numbers?

  1. 9642 and 87531
  2. 7642 and 87531
  3. 9649 and 87531
  4. 9642 and 87529
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