Probability Question 227
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.
BETA
