Why collectivity is integral, rational number can form gather, is gather those who there is determinism? Be in prepare lessons before class, need brother elder sister so helped! ! !

 
  • 为什么全体整数,有理数可以构成集合,集合不是有确定性的吗?正在预习中,所以需要哥哥姐姐的帮忙了!!!
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