Bases: sage.combinat.combinat.CombinatorialClass
TESTS:
sage: a = MultichooseNK(3,2)
sage: a == loads(dumps(a))
True
Returns the number of multichoices of k things from a list of n things.
EXAMPLES:
sage: MultichooseNK(3,2).cardinality()
6
Returns a random multichoice of k things from range(n).
EXAMPLES:
sage: MultichooseNK(5,2).random_element()
[0, 2]
sage: MultichooseNK(5,2).random_element()
[0, 1]