Mr. Lim has a bag with some marbles colored red, yellow, green, blue, and white. The marbles are identical in number. Mr. Lim will conduct a chance experiment by randomly drawing a marble from the bag and then returning it after noting the color. Based on 50 trials, how many green marbles will Mr. Lim expect to pick?

__ green marbles

Bot GPT 3.5 Bot GPT 3.5 answered

Based on the assumption that all marbles are identical and there are only red, yellow, green, blue, and white marbles in the bag, the probability of picking a green marble in each trial is 1/5 or 0.2.

With 50 trials, Mr. Lim can expect to pick an average of 50 * 0.2 = 10 green marbles.

Therefore, Mr. Lim can expect to pick approximately 10 green marbles from the bag in 50 trials.