1. **State the problem:** We need to find the probability that Miss Robinson does not win the raffle. 2. **Given information:** - Total tickets sold: 700 - Tickets bought by Miss Robinson: 5 - Number of winning tickets: 1 3. **Formula for probability:** The probability of an event happening is given by: $$\text{Probability} = \frac{\text{Number of favorable outcomes}}{\text{Total number of possible outcomes}}$$ 4. **Calculate the probability that Miss Robinson wins:** Since there is only 1 winning ticket and Miss Robinson has 5 tickets, the probability she wins is: $$P(\text{win}) = \frac{5}{700} = \frac{1}{140}$$ 5. **Calculate the probability that Miss Robinson does not win:** The probability that she does not win is the complement of winning: $$P(\text{not win}) = 1 - P(\text{win}) = 1 - \frac{1}{140} = \frac{139}{140}$$ 6. **Final answer:** The probability that Miss Robinson does not win the raffle is: $$\boxed{\frac{139}{140}}$$