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08-09-2022
Mathematics

Answered

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Introduction to permutations and combinations
Suppose we want to choose 3 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 is relevant?
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(b) How many ways can this be done, if the order of the choices is not relevant?
0
X

Answer :

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