How many 4-letter word with or without meaning can be formed out of the letters of the word 'LOGARITHMS' if repetition of letters is not allowed	Choose the correct option:
A) 7845  B) 1278  C) 4561  D) 5040  E) 3654
'LOGARITHMS' contains 10 different letters   Required number of words   = Number of arrangements of 100 letters taking   4 at a time   = 10P4   = 10 * 9 * 8 * 7= 
<gadget id="calculator">10 * 9 * 8 * 7</gadget>
<output>5_040</output>
5040   Ans: 5040
<result>D</result>
How many 4-letter word with or without meaning can be formed out of the letters of the word 'LOGARITHMS' if repetition of letters is not allowed