Let be a set having elements and a set having elements.

MATHEMATICS · Multi-part · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

Let AA be a set having 44 elements and BB a set having 66 elements. (i) Find the total number of injective functions from AA to BB. (ii) All functions from AA to BB are considered equally likely. Calculate the probability that a randomly chosen function is injective, expressing your answer as a fraction in simplest form.

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