来自邓立虎的问题
15,21,18,19,21,17,(),().说出理由.
15,21,18,19,21,17,(),().说出理由.
1回答
2020-07-25 21:27
15,21,18,19,21,17,(),().说出理由.
15,21,18,19,21,17,(),().说出理由.
15,21,18,19,21,17,(24),(15).
奇数项逐个加3
偶数项逐个减2