How many 3-letter words with or without meaning, can be formed out of the letters of the word, 'LOGARITHM', if repetition of letters is not allowed?
Choose the correct answer
A) 690
B) 504
C) 740
D) 760
E) 780
The word 'LOGARITHM' has 9 different letters.   Hence, the number of 3-letter words(with or without meaning) formed by using these letters   = 9P3   =   9   ×   8   ×   7   =   504   Option 504
<result>B</result>
How many 3-letter words with or without meaning, can be formed out of the letters of the word, 'LOGARITHM', if repetition of letters is not allowed?