来自贾晓琳的问题
【找规律填空:1:3,5,9,17,,,129...2:1,4,9,16,,,49,,...问号处该填什么?】
找规律填空:
1:3,5,9,17,,,129...
2:1,4,9,16,,,49,,...
问号处该填什么?
1回答
2020-03-04 09:01
【找规律填空:1:3,5,9,17,,,129...2:1,4,9,16,,,49,,...问号处该填什么?】
找规律填空:
1:3,5,9,17,,,129...
2:1,4,9,16,,,49,,...
问号处该填什么?
1:乘2减1
例,3*2-1=55*2-1=99*2-1=17.
2:加2递增
例,1(23)4(5678)9(101112131415)16.