**how many 4-letter words with or without meaning ,can be formed out of the letters of the word, "LOGARITHMS" ,if repetition is not allowed?**

The **Answer to the Question**

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**Here's the Solution to this Question**

Since repeatition is not allowed,

There are 10 ways for choosing first letter,

9 ways for choosing second letter,

8 ways of choosing third letter and

7 ways of choosing fourth letter

Hence total no. of 4 letter word

$=10×9×8×7=5040$