A. 999 < 1000 B. 9999 > 99983000 > 2999 9998 = 9990 + 8...

Câu 1.a. 999 < 1000 b. 9999 > 99983000 > 2999 9998 = 9990 + 88972 = 8972 2009 < 2010500 + 5 < 5005 7351 > 7153