小学数学规律题
问题描述：
小学数学规律题
急需大量数学规律题答案,谢谢!
答
1:999,994,989,984,( ),974,969;
2:10,30,90,270,( ),2430,7290:
3:1,4,16,( ),256,1024,4096:
4:2,5,3,6,4,7,5,8,( ),9,7.