找规律23,11,21,9,19,7,
问题描述:
找规律23,11,21,9,19,7,
答
17,5,15,3,13,1,以差2递减,分两个部分,23,21,19,17,15,13,。11,9,7,5,3,1
找规律23,11,21,9,19,7,
17,5,15,3,13,1,以差2递减,分两个部分,23,21,19,17,15,13,。11,9,7,5,3,1