Mathematics
Functions
Easy

Question

If a set A contains 10 elements and a set B contains 20 elements then the  number of functions from A into B is

  1. blank to the power of 20 P subscript 10
  2. 10 cross times 20
  3. 10 to the power of 20
  4. 20 to the power of 10

The correct answer is: 20 to the power of 10


    text  The number of functions  end text equals n left parenthesis B right parenthesis to the power of n left parenthesis A right parenthesis end exponent equals 20 to the power of 10

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