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AP EAMCET2020MathematicsFunctions

Let A= 1,2,3 , n and B= a, b if the number of onto functions from A to B is 62 , then the number of subsets of A containing exactly three elements is

Options

  1. A15
  2. B6
  3. C20
  4. D10

Correct answer

C. 20

Step-by-step solution

No solution. Refer to answer key.

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