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Julia
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What is the likelihood of a random person having a sister?
What is the chance that a randomly selected person has a sister?
There seems to be too many variables (eg, if the person is the firstborn child, even if every single couple on earth had at least 2 children and at least 1 of them was female, still, not everyone would have a sister) to figure out an answer using stats.
2 AnswersMathematics1 day ago