Question

It’s cut off but it says “about how many of them would you expect to be marked with a white dot.”

Answer 1

Assuming that the person does not account for probability changes when counters are not replaced, the answer is 20 counters.

Explanation:

Please refer to the picture above.

Disclaimer: Probability is not used to deduce the question. The knowledge of fraction is used instead to avoid excess complexity.

Assuming the number of dabbed counters follow the ratio of 1/4 as deduced from the number of dabbed counters in 200 counters, you would expect the number of dabbed counters in 80 counters to follow the same ratio of 1/4. Hence the answer is 20.