Name the architect who designed New Delhi.
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If the angles of a triangle are in the ratio of 1 : 4 : 7, then find the ratio of the greatest angle to the smallest angle.
What of the following refers to hypotheses which are confirmed by varied tests?
Who invented the mobile phone?
What denotes learned and shared beliefs and behaviors?
Identified the odd one from the list below.
Who invented the bifocal glasses?
When is International day for Preservation of Ozone layer observed?