Answer:
First, add all of them up to find the total number of chips, in this case: 10. Then, select the number of chips in the group you want to be selected (in this case purple) 5. take that number and put it over the total number, so the probability is: 5/10, which reduces to 1/2. Since the chip is not replaced, the new total number of chips in the jar is 9. since there is only 1 black chip in the entire bag, the probability of pulling the black chip is 1/9.
Explanation: