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1st question in the attachment....................................

1st question in the attachment....................................

Question Image
Grade:12

2 Answers

Arun
25763 Points
one year ago
 
Dear student
 
4/10)(6/12)+(6/10)(4/12)=2/5
hope u will understand
 
In case of any difficulty, please feel free to ask me again.
Saurabh Koranglekar
askIITians Faculty 10341 Points
one year ago
Dear student

If first time red is drawn (4/10)*(6/12)

If first time black is drawn ( 6/10)*( 4/12)

As we want to obtain red ball at output

So adding to cases ans is 2/5

Regards

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