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Aarvi Gosai from The New Tulip International School, Ahemdabad
Subject :NSO    Class : Class 5

In which of the following machines, wheel and axle is not used?

ADoor knob
BSkateboard
CCar
DSee-saw


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Ans 1:

Aarvi Gosai from The New Tulip International School, Ahemdabad
Class : Class 5
some see saws have wheel and axle

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