来自黄永平的问题
找规律填数1,5,4,10,7,15,()().
找规律填数1,5,4,10,7,15,()().
1回答
2020-03-14 00:18
找规律填数1,5,4,10,7,15,()().
找规律填数1,5,4,10,7,15,()().
1020
因为这列数中1,4,7每隔一数递增3,5,10,15每隔一数递增5,故第七个是10,第八个是20