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6 boys and 6 girls sit in a row at random. Find the probability that all the girls sit together.

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6 boys and 6 girls sit in a row at random. Find the probability that all the girls sit together. A. 1 432 B. 12 431 C. 1 132 D. None of these Select the correct answer from above options

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Correct Answer - C (c) If all the girls sit together, then considered it as 1 group. ∴Arrangement of 6 +1 = 7 person in a row is 7! and the girls interchanges their seets in 6! ways. ∴ Required probability = 6!7! 12! = 1 132

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