Question 1169742
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7*6*5*4 = 4220 different words.


You have 7 option to select first letter;

    then 6 options to select second letter

    . . .   and so on  . . . 


So your answer is the product of 4 integer factors that are consecutive integer numbers in descending order, starting from 7.
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The problem is solved and the method is explained.



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