Question

Петя Вася Коля и Саша играли в шашки. Каждый сыграл друг с другом по одной партии. Сколько всего партий сыграли ребята

Answer 1

Петя с Сашей, Колей, Васей 
Вася с Сашей, Колей, Петей
Коля с Сашей, Васей, Петей
Саша с Колей, Васей, Петей
-
12 партий они сыграли.

Answer 2

Total Number of Games Played by the Boys in Checkers

To find the total number of games played by the boys in checkers, we can use the information provided in the question. Since each of the four boys played one game with each of the other three boys, we can calculate the total number of games played.

Total number of games = 4 boys * 3 other boys = 12 games

Therefore, the boys played a total of 12 games of checkers.