L
lili_sj13


lam giup minh bai nay de so kq: 1."co bao nhieu so co 5 c/s doi mot >< nhau c/s hang tram lon nhat"
2."1 phong thi co 24 ng xep vao 12 ban, tinh xs de a va b ngoi cung ban"
2."1 phong thi co 24 ng xep vao 12 ban, tinh xs de a va b ngoi cung ban"
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