... ThÕ nµo lµ íc chung cña hai hay nhiÒu sè? T×m ¦C(12,30) ¦(12)={ 1,2,3,4,6,12 } (30)={ 1,2,3,5,6,10,15,30 } c(12,30)={ 1,2,3,4,6 } Trong c¸c íc chung cña 12 vµ 30 th× íc chung nµo lín nhÊt? ... : íc chung lín nhÊt 1.¦íc chung lín nhÊt: VD: T×m ¦CLN(12,30) ¦(12)={ 1,2,3,4,6,12 } (30)={ 1,2,3,5,6,10,15,30 } c(12,30)={ 1,2,3,6 } cln(12,30)=6 ¦(6)={ 1,2,3,6} TiÕt 32 ξ17 íc chung lín ... ¦CLN(a,b,1) = 1; • T×m ¦CLN(36,84,168)? TiÕt 32 ξ17 íc chung lín nhÊt Cßn c¸ch nµo kh¸c ®Ó t×m ¦CLN cña hai hay nhiÒu sè kh«ng? TiÕt 32 ξ17 íc chung lín nhÊt 2. T×m ¦CLN b»ng c¸ch ph©n tÝch c¸c...