Question 1149533
Seven-letter words can be formed without repetition from the letters of the word INCLUDE; 5040. How many have the letters N and D separated by exactly two letters?
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Few 7-letter words, if any, can be made from those.
Other words, but not with 7 letters are:
DUE
ID
DUNE
NUDE
DUEL
DINE
........
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If you mean just combinations of letters you should say that.