摘要:
A triangle is a Heron’s triangle if it satisfies that the side lengths of it are consecutive integers t-1, t, t+ 1 and thatits ar... 阅读全文
摘要:
Here N (N ≥ 3) rabbits are playing by the river. They are playing on a number line, each occupying a different integer. In a sing... 阅读全文