How many triangles are there in the given figure?
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Green House Effect' means
Ozone hole is caused by chemicals like _____.
Speakers can establish credibility by
The minimum number of members that must be present to hold the meeting of the Lok Sabha is
Dakshin Gangotri is a research base station set up by Indian scientists. Where is it located?
A ball of 0.1 kg is dropped from rest. When it falls through a distance of 2 m, the work done by the force of gravity is
The instrument used to determine the rotation speed of a shaft is called