Question

Which of the following is an ordered pair?

• A. $(p, q), p \in P$ and $q \in Q$
• B. $[p, q], p \in P$ and $q \in Q$
• C. $\{p, q\}, p \in P$ and $q \in Q$
• D. All of these

Answer 1

Answer: (A)

We know that, an ordered pair of elements taken from any two sets $P$ and $Q$ is a pair of elements written in small brackets and grouped together in a particular order, i.e., $(p, q), p \in P$ and $q \in Q$.