Pi Day quiz: How well do you know the mathematical constant?

14 March is Pi Day, a global celebration of the constant representing the ratio of a circle's circumference to its diameter. Think you know pi? Try our quiz

Pi Day quiz: How well do you know the mathematical constant?

14 March is Pi Day, a global celebration of the constant representing the ratio of a circle's circumference to its diameter. Think you know pi? Try our quiz

Wed 13 Mar 19 from Newscientist

Einstein quiz: Can you guess which quotes are really his?

To celebrate Einstein's birthday, see if you can tell which quotes are from the great man of physics

Wed 13 Mar 19 from Newscientist

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