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The number of ways in which 5 boys ...

The number of ways in which 5 boys and 3 girls can sit in row so that all the girls and all the boys sit together is

A

1358

B

1440

C

1435

D

1354

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The correct Answer is:
B
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Assertion (A): The number of ways in which 5 boys and 5 girls can sit in a row so that all the girls sit together is 86400. Reason (R) : The number of ways in which m (first type of different) things and n (second type of different) things can be arranged in a row so that all the second type of things come together is n!""^((n+1))P_(m) The correct answer is

A : the number of ways in which 5 boys and 5 girls can be sit in a row so that all the girls sit together is 86400. R : The number of ways in which m ( first type of different ) things and n ( second type of different things cna be arranged in a row so that all the second type of things come together is n ! ( m+ l) ! .

DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1A (PERMUTATIONS )
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  3. The number of ways in which 5 boys and 3 girls can sit in r...

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  4. The number of ways in which 5 mathematics 4, physcis 2, chemistr...

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  6. The number of ways that 5 mathematics , 3 physics and 2 chemis...

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  7. The number of ways in which n books can be arranged so that ...

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  8. The number of ways in which 5 boys and 4 girls can be sit i...

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  9. The number of ways that 5 students can be sit in a row.3 talle...

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  10. Six papers are set in examination , 2 them in Mathematics the n...

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  11. The letters of the word QUESTION are arranged in all possible way...

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  12. A railway carriage can seat 5 each side . The number of ways a...

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  13. A family consistinf of an old man 6 adults and 4 children , ...

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  14. IF the letters of word SACHIN are arranged in all possible w...

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  15. The letters of the word ZENITH are permuted in all possible ways...

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  16. The letters of the word KRISHNA are permuted in all possible wa...

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  17. The letters of the word VICTORY are permuted in all possible wa...

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  18. The letters of the word MASTER are permuted in all possible ways...

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  19. IF all permutations of the letters of the word INTER are arrang...

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  20. All the numbers that can be formed , using all the digits at a ...

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