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Round Two. 100. 200. 300. 400. 500. 100. 100. 100. 100. 200. 300. 400. 500. 200. 300. 400. 500. 200. 300. 400. 500. 200. 300. 400. 500. Simple Machines. Sound. Light. Optics. Electricity. Simple Machines 100. Which simple machine is missing from the list below?leverpulleyscrewwheel and axlewedg
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