1. Draw what a tile would look like for question one that has two ones. What are the other options for the third corner? How can you write this in terms of the vocabulary that you would use in probability?
2. Think about the choices that you could have for exactly one. Would you multiply or add your options together? What makes more sense? Think back to easier problems in probability with different food options or music options. When do we add and when do we multiply?
3. “At least” could have different options, what are they? If it’s “this” or “this” or “this”, what do we do with these values to get your final answer?
4. We know that each number would in theory have 31 tiles. But, remember that tiles contain more than one number so we cannot count these tiles twice. How can we go about counting them only once?