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?
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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The Economics Of The Environment
Authors: Peter Berck, Gloria Helfand
1st Edition
978-0321321664, 0321321669
