Three groups of children contain respectively 3 girls and 1 boy; 2 girls and 2 boys; 1 girl and 3 boys. One child is selected...

      

Three groups of children contain respectively 3 girls and 1 boy; 2 girls and 2 boys; 1 girl and 3 boys. One child is selected at random from each group, show that the chance that the three selected, consist of 1 girl and 2 boys is 13/32.

  

Answers


Mutiso
The best way to solve this is by use of a probability tree as follows:
Let G be the event of a girl being chosen
And B be the event of a boy being chosen
3groups7121124.png
Mutiso answered the question on December 7, 2018 at 08:26


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