9. Use induction on the size of S to show that if S is a finite...

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9. Use induction on the size of S to show that if S is a finite set, then |25| = 21S1 10. Show that if S and S2 are finite sets with |S|= n and |S2| = m, then S US n+m. 9. Use induction on the size of S to show that if S is a finite set, then |25| = 21S1 10. Show that if S and S2 are finite sets with |S|= n and |S2| = m, then S US n+m.