How many words, with or without meaning, can be formed using all letters of the word EQUATION using each letter exactly once?  Choose the correct answer:
A) 38,320
B) 39,320
C) 40,320
D) 38,400
E) 39,400
The Word EQUATION has exactly 8 letters which are all different.   Therefore the number of words that can be formed = Number of permutations of 8 letters taken all at a time.   = P (8, 8) = 8!   = 8 × 7 x 6 × 5 x 4 x 3 x 2 × 1   = 40,320   ANSWER:40,320
<result>C</result>
How many words, with or without meaning, can be formed using all letters of the word EQUATION using each letter exactly once?