The number of permutations of four letter words obtained from the letters of the word "ARTICLE"is

4!

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\frac{7!}{4!}

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^{7} P_{4} 3!

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^{7} P_{4}

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Solution

The correct option is B $^{7} P_{4}$
ARTICLE - total letters : 7
out of them four letters should be
selected to be permutated
= $^{7} P_{4}$
Option : D

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