Who invented Vacuum Flask?
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Who was the founder of the Theosophical Society?
In which sport did India win Bronze medal at Rio Olympics 2016?
∆DEF is right angled at E. If tanD = 4/3, then what is the value of tanF ?
ΔXYZ is right angled at Y. If cosX = 3/5, then what is the value of cosecZ ?
What is the simplified value of (cos A + sin A)(cot A + tan A)?
Ashoka was an emperor of the __________ Dynasty.
Land covers about ______ of the earth's surface.