A binary relation from set A to set B is a subset of the Cartesian product A × B. If A has 2 elements and B has 3 elements, then A × B has 2 × 3 = 6 ordered pairs. The number of subsets of a set with 6 elements is 2⁶ = 64, so there are 64 possible binary relations.
If A has two elements and B has three elements then number of binary relations in A × B is?
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This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the ETEA Educational Testing and Evaluation Agency preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.