How many 4-letter words with or without meaning, can be formed out of the letters of the word, 'LOGARITHMS', if repetition of letters is not allowed? Answers:
A) 5040
B) 40
C) 400
D) 5000
E) 6000
LOG5040RITHM =&gt; 10 diff letters   req no of words = No of arrangements of 10 letters taking 4 at a time   =&gt; 10P4 = (10*9*8*7)   ==&gt; 5040   5040NSWER 5040
<result>A</result>
How many 4-letter words with or without meaning, can be formed out of the letters of the word, 'LOGARITHMS', if repetition of letters is not allowed?