If letter repetition is not permitted, how many four-letter words with or without meaning can be created from the letters in the word 'LOGARITHMS'?
A. 40
B. 400
C. 5040
D. 2520
Answer:C
If letter repetition is not permitted, how many four-letter words with or without meaning can be created from the letters in the word 'LOGARITHMS'?
A. 40 B. 400 C. 5040 D. 2520
Explanation: 'LOGARITHMS' is made up of ten distinct letters.The required number of words is equal to the number of 10 letter arrangements taken four at a time. = 5040 = 10P4 = (10 x 9 x 8 x 7).