Basic General Knowledge
To produce sound it is necessary that

the source should execute transverse vibrations
the source may execute any type of vibrations
the vibrations of source are not necessary
the source should execute longitudinal vibrations

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Basic General Knowledge
What is the purpose of SAARC?

All of these
To accelerate economic growth and cultural development
To improve the environment of security in the region
To promote the welfare of the people of South Asia

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