Question: A mini license plate for a toy car must consist of a letter followed by two numbers. Each letter must be a T, O or Y. Each number must be a 4 or 6. Repetition of digits is permitted.

? Use the counting principle to determine the number of points in the sample space.

? Construct a tree diagram to represent this situation

? List the sample space.

? Determine the exact probability of creating a mini license plate with a Y. Give solution exactly in reduced fraction form.