📐 Mathematics · Relations and Functions (Class 12) · JEE

The number of elements in A × B when n(A) = 3 and n(B) = 4 is:

Answer: 12.

Correct answer: C. 12

Explanation: The Cartesian product has n(A) × n(B) = 3 × 4 = 12 ordered pairs.

Concept context

Types of relations, equivalence classes, one-one and onto functions, composition, and invertible functions