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Sidhesh Prabhudesai from Arya Vidya Mandir, Mumbai
Subject :NSO    Class : Class 4

Which of these machines works on the same principle as does the see-saw?


AP and Q
BQ and R
CP and R
DR and S


Ans 1:

Souradeepto Das Mandal from Hyderabad Public School, Hyderabad
Class : Class 6

Ans 2:

Barsan Maity from DAV School Siliguri, Siliguri
Class : Class 6
Why option c is Incorrect

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