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What I've tried so far:
I've tried to consider a few cases in the set N ( positive integers) and showed that it was true. I then moved on to show that this is true for k integers in each set.
<Describe what you have tried so far here. That way, we can do a better job helping you!>
Where I'm stuck:
I don't know how I can prove that the statement is true for any set S.
<Describe what's confusing you, or what your question is here!>
I've tried to consider a few cases in the set N ( positive integers) and showed that it was true. I then moved on to show that this is true for k integers in each set.
<Describe what you have tried so far here. That way, we can do a better job helping you!>
Where I'm stuck:
I don't know how I can prove that the statement is true for any set S.
<Describe what's confusing you, or what your question is here!>