Exercise · ZW-BINARY-RELATION-008 · ★★☆ Intermediate
Let \(R=\{(a,b)\in \mathbb{N}\times\mathbb{N} : b=a+1\}\). Which of these pairs belongs to \(R\)?
Choose one option.
Show answer
- B. \((4,5)\)
Explanation
For \((4,5)\) we have \(5=4+1\). The other pairs do not satisfy \(b=a+1\).
Review the concept: Binary relation
A set of ordered pairs \((a,b)\) specifying which elements of \(A\) are related to which elements of \(B\).
\[R \subseteq A \times B\]
More practice problems: binary relation
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