Question

В 5 Классе лучше всех решают задачи по математике Андрей,Боря ,Вася, и ГЕНА.Перед олимпиадой их друзья делали прогнозы первый друг сказал задачки решит Андрей и Боря второй сказал Андрей и ГЕНА вася и Боря Задачки решили два пятиклассника.Причем двое друзей угадали одного из школьников решивших все задачи ,а второго не угадали А третий друг не смог угадать никого ,Кто решил все задачки

Answer 1

1) Андрей и Боря 
2) Андрей и Гена
3) Вася и Боря
Ответ: решили все задачи Андрей и Гена

Answer 2

Problem Analysis

In this problem, we are given that four students, Andrey, Borya, Vasya, and Gena, are solving math problems. Three of their friends made predictions about who would solve all the problems. The first friend said that Andrey and Borya would solve the problems, the second friend said that Andrey and Gena would solve the problems, and Vasya and Borya would not. Two of their friends correctly predicted one of the students who solved all the problems, but the third friend couldn't guess anyone. We need to determine who solved all the problems.

Solution

Let's analyze the information given step by step:

1. The first friend said that Andrey and Borya would solve the problems. 2. The second friend said that Andrey and Gena would solve the problems, and Vasya and Borya would not. 3. Two of their friends correctly predicted one of the students who solved all the problems. 4. The third friend couldn't guess anyone.

From the first friend's statement, we know that Andrey and Borya solved the problems. From the second friend's statement, we know that Andrey and Gena solved the problems, and Vasya and Borya did not.

Since two of their friends correctly predicted one of the students who solved all the problems, we can conclude that Andrey is one of the students who solved all the problems.

Since the third friend couldn't guess anyone, we can conclude that Gena is the other student who solved all the problems.

Therefore, Andrey and Gena are the students who solved all the problems.

Answer

Andrey and Gena solved all the math problems.