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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?

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Verified by Experts

The word, 'LOGARITHMS' contains 10 different letters.
Number of 4-letter words formed out of 10 given letters
`=""^(10)P_(4)=(10xx9xx8xx7)=5040.`
Hence, the required number of 4-letter words `= 5040.`
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