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An event organizer prepared 121 cups and 82 plates. Visitors used 89 cups and 70 plates. How many cups and plates were left clean at the end of the event?
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Note: This problem has dynamic elements. This means elements such as numbers and consequently the step-by-step solution and the final answer may change overtime. Therefore, there may be a difference between a problem that is published online and the same problem exported into a PDF document.
Number of clean cups:
Number of clean plates:
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