Question

На вечеринке у каждого человека спросили, сколько у него знакомых среди присутствующих. Были получены следующие ответы: 2,2,2,3,3,6,6,7,7. Докажите, что кто-то ошибся. С объяснинием

Answer 1

Ответ После вечеринки много людей будет не в трезвом состоянии и они могут ошибиться в чем то

Объяснение:

Answer 2

Problem Analysis

We are given a list of responses from individuals at a party, where each person stated the number of acquaintances they have among the attendees. The responses are as follows: 2, 2, 2, 3, 3, 6, 6, 7, 7. We need to prove that someone made an error in their response.

Solution

To prove that someone made an error in their response, we can analyze the given list of responses and look for any inconsistencies or patterns.

Let's examine the list of responses: 2, 2, 2, 3, 3, 6, 6, 7, 7.

We can observe that the numbers 2, 3, 6, and 7 are repeated twice in the list. This means that there are at least two people who claim to have the same number of acquaintances.

If we assume that all the responses are correct, then there must be two people who have the same number of acquaintances. However, this assumption leads to a contradiction because there are only nine responses, and the maximum number of distinct responses is eight (from 2 to 7). Therefore, someone must have made an error in their response.

Since we cannot determine who made the error based on the given information, we can conclude that at least one person made a mistake in their response.

Conclusion

Based on the given list of responses, we have proven that someone made an error in their response regarding the number of acquaintances they have among the attendees. However, we cannot determine who made the error without additional information.