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Question

In how many way 4 girls and 5 boys can

be seated around a circular table such thatOnly two girls sit together

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Solution

There are 4 girls and 5 boys.Let first 2 girl out of 4 are taken out. This can be done in 4C2 ways.Now 5 boys can sit in 5! ways.There will be 4 space between them so remaining 2 girls can sit in 4P2ways. and lastly two girls together can interchange their position in 2! ways sototal number of seating arrangement= 4C2×5!×4P2×2!

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