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Chetan suryawanshi Asked a Question
May 16, 2020 2:33 pmpts 30 pts
69. P and Q sit in a ring arrangement with 10 persons. What is the probability that P and Q will sit together?
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  • Ruby negi
    you have to remember that to arrange n no. of persons in a ring is always (n-1)!... this page help you to understand.
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  • Ruby negi
    solution....
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  • Chandra dhawan
    total no of person is 12 ,... P and Q and 10 other
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  • Chandra dhawan
    I hope you got it
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  • Chandra dhawan thankyou
    wherever the first person sits in the ring, there are only two sits next to him (right and left). So the solution is always 2/(N-1) where N is the total number of people in the ri...
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  • Chandra dhawan thankyou
    see attached file it's very helpful for you
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  • Chandra dhawan
    see attached file
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  • Dhairya sharma
    p and q are with 2 person so total no of person will be 4. and the no of arrangement is n!
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  • Dhairya sharma Best Answer
    see attached.
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