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Question

The number of words that can be formed out of the letters of the word "ARTICLE" so that the vowels occupy even places is

A
574
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B
36
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C
754
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D
144
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Solution

The correct option is C 144
There are total 7 words then there will be 7 positions out of 3 are even place like 2,4,6 and we have 3 vowels A,I,E

The vowels can be arranged in the even place in 3! places and the rest can be arranged in 4!

Required number of ways 3!×4!=144

513635_476966_ans_314a2111742b437ea3c22c29094aa8a5.jpg

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