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-6/35 1.正負規律:一正一負,這個容易 2.分子規律:1,2,3,4,5,6這個也容易 3.分母規律:難點 2,3,10,15,26,(35) 2=1平方+1 3=2平方-1 10=3平方+1 15=4平方-1 26=5平方+1 (35)=6平方-1
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