Question
Suppose we want to choose 2 letters, without replacement, from the 4 letters A, B, C, and D.(a) How many ways can this be done,
Suppose we want to choose 2 letters, without replacement, from the 4 letters A, B, C, and D.(a) How many ways can this be done, if the order of the choices matters?(b) How many ways can this be done, if the order of the choices does not matter?
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Precalculus Mathematics For Calculus
Authors: David M Kennedy, James Stewart, Lothar Redlin, Saleem Watson
6th Edition
1133715044, 9781133715047
