1. The problem states that the answer for part c is \(\frac{31}{105}\).\n2. To verify or understand this result, we would typically start by identifying the problem type (e.g., fraction simplification, probability, algebraic fraction).\n3. Since the user only provided the answer, we assume the problem involved simplifying or calculating a fraction.\n4. The fraction \(\frac{31}{105}\) is already in simplest form because 31 is a prime number and does not share any common factors with 105 other than 1.\n5. Therefore, the fraction \(\frac{31}{105}\) is the final simplified answer for part c.\n