SOLUTION: https://vle.mathswatch.co.uk/images/questions/question16992.png please help

Question 1118090: https://vle.mathswatch.co.uk/images/questions/question16992.png
please help
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
3 blue, 7 green
probability both are blue is 3/10 *2/9=6/90, or 1/15
probability both are green is 7/10*6/9=7/15
The sum is 8/15
probability of the first blue is 3/10. Once that has been removed, there are 2 blue and 7 green left, so it is a probability of 2/9.
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