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AP EAMCET20224 Jul 2022Evening ShiftMathematicsFunctionsActual

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

Options

  1. AC m n if n ≥ m
  2. BP m n if n ≥ m
  3. C0 if n ≥ m
  4. Dm . C m n if n ≥ m

Correct answer

B. P m n if n ≥ m

Step-by-step solution

If a set A has m elements and the set B has n elements, then the number of injections from A to B is = P m n ;         n ≥ m 0 ;                   n < m

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