SATHEE: Statistics And Probability Question 146

Statistics And Probability Question 146

Question: A party of 23 persons take their seats at a round table. The odds against two persons sitting together are

[RPET 1999]

Options:

A) 10 : 1

B) 1 : 11

C) 9 : 10

D) None of these

Show Answer

Answer:

Correct Answer: A

Solution:

                Required probability                                                    $ =\frac{(21)\,!\,2\,!}{(22)\,!}=\frac{1}{11}=\frac{1}{1+10} $  .                                 \  Odds against = 10 : 1.

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Statistics And Probability Question 146

Question: A party of 23 persons take their seats at a round table. The odds against two persons sitting together are

Options:

Answer:

Solution:

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