A problem such as this should contain the words "at least", "at most",
or "exactly". When these words are omitted the problem is ambiguous.
For instance, this particular problem:
How many ways are there to pick any 5 cards from 52 cards,
that ______ 2 cards are the same denomination or ______ 3
different numbers?
would have 3×3=9 different answers because you could fill each
blank in 3 different ways, "at least", "at most", or "exactly".
Edwin