lexisstuart1996 lexisstuart1996
  • 16-01-2024
  • Mathematics
contestada

Suppose we want to choose 2 letters, without replacement, from the 5 letters A, B, C, D, and E.
(a)
How many ways can this be done, if the order of the choices is taken into
consideration?
(b)
How many ways can this be done, if the order of the choices is not taken into
consideration?

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