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 ?

5040
2525
2052
4521

Correct Answer: 5040

Explanation:

The Word LOGARITHMS contains 10 letters.

To find how many 4 letter words we can form from that = $P 410$ =10x9x8x7 = 5040.

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