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kondor19780726 [428]
3 years ago
8

12 people sit in a row in random order. two of the people are a and

Mathematics
1 answer:
Scrat [10]3 years ago
6 0
<span>A has a 2 in 12 chance of being at an end and a 10 in 12 chance of being somewhere in the middle. For the end seats, B has a 1 in 11 chance of sitting next to A, and a 2 in 11 chance of being next to A if A's in a non-end seat. (2/12)*(1/11)+(10/12)*(2/11)=2/132+20/132=22/132 chance of being next to each other.</span>
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