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Un article trouvé pour ce sujet.
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Permuting the letters in ELEVEN |
2008-01-23 |
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Beth pose la question :
(i) Find the number of distinct permutations that can be formed from all
of the letters of the word ELEVEN.
(ii) How many of them begin and end
with E?
(iii) How many of them have the 3 E's together?
(iv) How many
begin with E and end with N?
Stephen La Rocque lui répond. |
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