There are an equal number of red, yellow, green, and blue cards. Take one of them and put it in the box. Suppose that red cards was most selected, followed by yellow, green, and blue when we selected cards outside the box randomly. What is the color of the card in the box?
This problem was suggested in the lecture yesterday by other students. I asked solutions for the problem in Mathematics Stack Exchange, and I want to ask something different. The lecture aims to making a set of math problems that enhance mathematical creativity of middle or high school students, and the presenters claimed that this is an example that students can enhance mathematical creativity by the problem.
My question: How to determine whether this problem help students to enhance their mathematical creativity? How to improve this problem?