5 questions0m 0s
Learn the skill
Count equally likely individual tiles, then divide the wanted count by the whole bag count. Compare proportions rather than wanted counts alone. The chance of either of two non-overlapping shapes uses their combined count. The chance rule describes possible draws; it does not require a short sequence to match that fraction exactly. Each question states its own model.
Worked example
Bag X has 1 star in 4 tiles, while Bag Y has 2 stars in 8 tiles. Both give a star chance of 1/4, since 2/8 = 1/4. Doubling every category preserves the chance. Doubling only the star count would change the mix.
