Q. 395.0( 2 Votes )

# The number of words which can be formed out of the letters of the word ARTICLE, so that vowels occupy the even place is

A. 1440

B. 144

C. 7!

D.^{4}C_{4} × ^{3}C_{3}

Answer :

Formula:- (i)^{n}P_{r}=

Vowel at even places can be formed by=^{3}P_{3}

Consonants at odd places =^{4}P_{4}

Required arrangement =3! x4!

=144

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Which of the following are true :

(2 + 3)! = 2! + 3!

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