jkbrzt

(function() {
    // This is a new closure. If things that happen here don't have side-effects on outside scope,
    // then whatever happens here will not be visible outside of it.

    (function() {
        // You can make closures inside of closure (inside of closures). Wee.
    })();
})();

jkbrzt

from __future__ import division
from operator import mul


def Q(n):
    """
    Let Q(n) be the probability that     
    no two people have a common birthday.

    """