A bag contains 5 red balls, 8 white balls, 4 green balls and 7 black balls. If one ball is drawn at random, find the probability that it is: (i)black(ii) red(iii) not green

Explanation

To solve the problem step by step, we will calculate the probabilities for each part of the question.

### Given:
- Red balls = 5
- White balls = 8
- Green balls = 4
- Black balls = 7

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