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Question: Answered & Verified by Expert
If a set A has m elements and the set B has n elements, then the number of injections from A to B is
MathematicsFunctionsAP EAMCETAP EAMCET 2022 (04 Jul Shift 2)
Options:
  • A Cmn if n≥m
  • B Pmn if n≥m
  • C 0 if n≥m
  • D m.Cmn if n≥m
Solution:
1773 Upvotes Verified Answer
The correct answer is: Pmn if n≥m

If a set A has m elements and the set B has n elements, then the number of injections from A to B is

=Pmn;    n≥m0;         n<m

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