1. The document discusses probability calculations for rolling dice. It calculates the probability of rolling certain numbers, like numbers divisible by 2, 3, 4, 6, etc. when rolling one or three dice. 2. It notices a pattern in the calculations - the probability is the number of outcomes divided by the total number of possible outcomes. It expresses this as a formula. 3. The formula is shown to work for some numbers like 8 when rolling 3 dice, but not others like 10, as there are no outcomes divisible by 10. The number must result in a whole number and be between 1 and the total number of outcomes.