what is the theoretical probability of picking a yellow counter in simplest form?

To find the theoretical probability of picking a yellow counter, we need to consider the total number of yellow counters and the total number of counters.

Let's say there are n total counters and m yellow counters.

The theoretical probability of picking a yellow counter is:
P(yellow) = m/n

This probability is already in its simplest form, as it represents the ratio of yellow counters to total counters.