def test_choices(self):
self.assertEqual(choices(7, 0), 1)
self.assertEqual(choices(7, 1), 7)
self.assertEqual(choices(7, 5), 21)
def binom(p, n, k):
return choices(n, k) * p ** k * (1 - p) ** (n - k)
def test_choices(self):
self.assertEqual(choices(7, 0), 1)
self.assertEqual(choices(7, 1), 7)
self.assertEqual(choices(7, 5), 21)
def binom(p, n, k):
return choices(n, k) * p ** k * (1 - p) ** (n - k)
