JEE Advanced Mathematics question
One Indian and four American men and their wives are to be seated randomly around a circular table. Then the conditional probability that the Indian man is seated adjacent to his wife given that each American man is seated adjacent to his wife is
Answer: (C)
Solution
Let = each American man sits next to his wife, = the Indian man sits next to his wife. 10 people sit round a table.
- : tie each American couple into one unit → 4 units + Indian man + Indian wife = 6 units around a circle: ways, and each couple can swap
See the full step-by-step solution
Create a free account to read the complete working (4 steps), and practise questions like this in a timed test.
Create a free account