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

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

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Grade:12

2 Answers

Arun
25758 Points
2 years 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 10336 Points
2 years 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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