A couple plan to have exactly four children. ...

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A couple plan to have exactly four children. 

 (a) Construct a tree diagram and list the sample space.

(b) Find the probability that the family has at least three boys.  

    • 8 years ago
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    {BBBB, BBBG, BBGB, BBGG, BGBB, BGBG, BGGB, BGGG, GGGG, GGGB, GGBG, GGBB, GBGG, GBGB, GBBG, GBBB} ...
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