public void Permutation_5Over2Equals5Over3_AreEqual()
        {
            var act = StatisticalMath.Permutation(5, 2);
            var exp = StatisticalMath.Permutation(5, 3);

            Assert.AreEqual(exp, act);
        }
        public void Permutation_52Over5_AreEqual()
        {
            var act = StatisticalMath.Permutation(52, 5);
            var exp = PokerHand.HandTotal;

            Assert.AreEqual(exp, act);
        }