हिंदी

The number of different words that can be formed from the letters of the word INTERMEDIATE such that two vowels never come together is ______.

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प्रश्न

The number of different words that can be formed from the letters of the word INTERMEDIATE such that two vowels never come together is ______.

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उत्तर

The number of different words that can be formed from the letters of the word INTERMEDIATE such that two vowels never come together is 151200.

Explanation:

Total number of words is INTERMEDIATE = 12

Which have 6 vowels and 6 consonants

If two vowels never come together then we can arrange as under

V C V C V C V C V C V C V

Here, vowels are IEEIAE where 2 I’s and 3 E’s are there.

∴ Number of ways of arranging vowels = `(7!)/(3!2!)` = 420.

Consonants are NTRMDT where 2T’s are there

∴ Number of ways arranging consonants = `(6!)/(2!)`

= `(6*5*4*3*2!)/(21)` = 360

So, the total number of words are = 420 × 360

= 151200

Hence, the value of the filler is 151200.

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अध्याय 7: Permutations and Combinations - Exercise [पृष्ठ १२६]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 11
अध्याय 7 Permutations and Combinations
Exercise | Q 44 | पृष्ठ १२६

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