3 ms·

The parity of zero, the primality of two, and other mysteries

• gus_massa 9y ago
  > There seems to be a weak relationship between time spent and the number of correct answers (though the people who answered almost everything wrong did so pretty slowly), but maybe this isn't surprising. How are the people that mark "None of the above" counted? It's very difficult to not get at least one answer correctly by chance.