For the relation $R = \{(1,2), (2,3), (3,4), (4,5), (5,6)\}$ on $\{1,2,3,4,5,6\}$, what is the **range**?
A$\{2, 3, 4, 5, 6\}$
B$\{1, 2, 3, 4, 5\}$
C$\{1, 2, 3, 4, 5, 6\}$
D$\phi$
Answer & Solution
Correct answer: A. $\{2, 3, 4, 5, 6\}$
Range = set of second elements = $\{2, 3, 4, 5, 6\}$. The element $1$ never appears as a second component.
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