Answer: 7/190
Explanation: The total amount of crayons is 20 (the 100% in probability). Since there are 2 green crayons, the proportion will be 2/20. The question is asking what is the probability if she will choose a red crayon next, so we have to set up a fraction multiplication for the red crayon as well. Since she doesn’t put the green crayon back, the total will be 19 crayons, and the final fraction multiplication will be 2/20 x 7/19, which is equal to 7/190.