ì©«¥Ñ onno1 ©ó 2014-5-28 15:52 µoªí
777
R1) 2 »â¯èºë¯« 6 «C¬K±o·N
R2) 4 ¤W®ü¥ý¾W 5 ®É©|·µØ
¦ì¸m³sŤG¦ê¤G¦ê¤T X 200 = 600
R1) 2 + 4 + 5 + 6 + 10
R2) 1 + 3 + 4 + 5 + 12
³æT¦U³õ 20 = 400
¦@ 1000
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