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Задача о промежутках

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Statistics
73.6 secs
Average solve time
53.6%
15/ 28
Success answers / total
0
Training points
Custom
Type task
120 secs
Task time
∞
Count of unique tasks
Details
Subject:Arithmetic
Teaches: Сколько промежутков между N объектами, стоящими в линию
Required skills:
Таблица умножения до 100
Language: ru
Author
An Na
Statistics
73.6 secs
Average solve time
53.6%
15/ 28
Success answers / total
0
Training points