2,12,30,56() 2,5,14,41()() 2,5,13,36,104()2,12,30,56()()
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 13:39:44
![2,12,30,56() 2,5,14,41()() 2,5,13,36,104()2,12,30,56()()](/uploads/image/z/129642-42-2.jpg?t=2%2C12%2C30%2C56%EF%BC%88%EF%BC%89+2%2C5%2C14%2C41%EF%BC%88%EF%BC%89%EF%BC%88%EF%BC%89+2%2C5%2C13%2C36%2C104%EF%BC%88%EF%BC%892%2C12%2C30%2C56%EF%BC%88%EF%BC%89%EF%BC%88%EF%BC%89)
2,12,30,56() 2,5,14,41()() 2,5,13,36,104()2,12,30,56()()
2,12,30,56() 2,5,14,41()() 2,5,13,36,104()
2,12,30,56()()
2,12,30,56() 2,5,14,41()() 2,5,13,36,104()2,12,30,56()()
答案90
规律:
1*2=2
3*4=12
5*6=30
7*8=56
9*10=90
答案:122
规律
2+3=5
5+9=14
14+27=41
41+81=122
(其中3*3=9 9*3=27 27*3=81)
答案:307
规律:
2*3-1=5
5*3-2=13
13*3-3=36
36*3-4=104
104*3-5=307