In a family gathering, twelve people
sit around a round table, among them couple A wants to
sit together. What is the probability that couple A sit according to their wish?
Enter the answer up to 2 decimals accuracy.
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Given : In a family gathering, twelve people sit around a round table, among them couple A wants to sit together
To Find : What is the probability that couple A sit according to their wish
Solution:
12 people sit around a round table,
12 people can sit in 11! ways
couple A sit together can sit in 2 ways
and remaining 10 people can sit in 10! Ways
probability that couple A sit according to their wish = 2*10!/11!
= 2/11
= 0.1818
= 0.182
= 0.18 ( upto two decimal place)
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