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

The number of one-one functions from a set with 3 elements to a set with 5 elements is:

Answer: 60.

Correct answer: D. 60

Explanation: Choose distinct images in order: 5 × 4 × 3 = 60.

Concept context

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