Set A has 3 elements and set B has 4 elements then number of injections defined from A to B are?(a) 12(b) 24(c) 36(d) 48I have been asked this question during an interview.Enquiry is from Number of Functions in section Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

Set A has 3 elements and set B has 4 elements then number of injection

1.	Set A has 3 elements and set B has 4 elements then number of injections defined from A to B are?(a) 12(b) 24(c) 36(d) 48I have been asked this question during an interview.Enquiry is from Number of Functions in section Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics
Answer» RIGHT OPTION is (b) 24 To explain: Injections will be ^4C3 X 3!=24.

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