How many 3-letter code words are possible using the first 8 letters of the alphabet if (A)

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How many 3-letter code words are possible using the first 8 letters of the alphabet if

(A) No letter can be repeated?

(B) Letters can be repeated?

(C) Adjacent letters cannot be alike?

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Finite Mathematics For Business Economics Life Sciences And Social Sciences

ISBN: 9780134862620

14th Edition

Authors: Raymond Barnett, Michael Ziegler, Karl Byleen, Christopher Stocker

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