Koushik can do a piece of work in X days and Krishnu can do the same work in Y days. If they work together, then they can do the work in
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Albert Sabin is known for developing _____.
Who invented the Centigrade scale?
Name the first Indian to get Bharat Ratna posthumously.
Who invented logarithms?
__________ is the 2016 Oscar Winner for Best Director.
Which of the following places is not a Middle Stone Age?
Through which does light travel best?