PDF chapter test TRY NOW

In a bag, there are 7 blue balls, 3 violet balls and 10 pink balls. Then answer the following question.
 
I) Probability of picking up all the pink balls \(=\) ii.
 
II) Probability of picking up all the violet balls \(=\) ii.
 
III) Probability of picking up one blue ball \(=\) ii.