Moshe Gariani
Well-known member
- Mar 10, 2005
- 12,180
What is the probability that the other one is a boy?
1 in 3
Chances of the other child being an identical twin are approx. 3/100, otherwise it's 50/50. So approximately 51.5% chance that the other is a boy.
Although I fear I may have missed the trick part of this question.
Yes "One of them is a boy."
"And so is the other" is a possible follow on line, and hence has a probability...
What's the probability of it being a trick question?
"And so is the other" is a possible follow on line, and hence has a probability...
Nope - don't buy that. That line contradicts the first line. So the answer is zero.
Nope - 'One of them is a boy' does not preclude the other child being a boy also - 'Only one of them is a boy' would though.Nope - don't buy that. That line contradicts the first line. So the answer is zero.
Not sure, not enough data given
Even if it isn't meant to be a trick question, you would have to include the probablility of it being so, and then work out the probablility of it being a boy.
The questioner has failed if it wasn't a trick question.