Dear all,

If I have a list, how do I obtain the cardinality of the list, the
command Cardinality() doesn't seem to always work. For example, the
following code produces a set ComSet of sets of combinations.

Rows=3
RowVector=[2,3,2]
ComSet=[]
for j in range(Columns):
    C=Combinations(range(Rows),RowVector[j])
    ComSet.append(C.list())
show(ComSet)

However using Cardinality() on ComSet does not seem to work:

ComSet.Cardinality()

Basically I am looking for the mathematica command "Length".
Furthermore how would I be able to map that command on to the elements
of ComSet?

Many thanks,
Vince

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