A family has four children with at least two boys. What is the probability that the first child is boy and has exactly one brother?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Pp# 4: can you help me solve and understand this practice problem please? A step by step explanation would be appreciated. Thank you!
A family has four children with at least two boys. What is
the probability that the first child is boy and has exactly one
brother?
Transcribed Image Text:A family has four children with at least two boys. What is the probability that the first child is boy and has exactly one brother?
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