帮我算几个找规律的题目.1,1,2,6,1,3,5,7,9,13,15,,0,1,1,2,4,7,13,2,3,10,15,26,1,10,31,70,133,1,2,3,7,46,0,1,3,8,22,63,
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/05 21:47:43
帮我算几个找规律的题目.1,1,2,6,1,3,5,7,9,13,15,,0,1,1,2,4,7,13,2,3,10,15,26,1,10,31,70,133,1,2,3,7,46,0,1,3,8,22,63,
帮我算几个找规律的题目.
1,1,2,6,
1,3,5,7,9,13,15,,
0,1,1,2,4,7,13,
2,3,10,15,26,
1,10,31,70,133,
1,2,3,7,46,
0,1,3,8,22,63,
帮我算几个找规律的题目.1,1,2,6,1,3,5,7,9,13,15,,0,1,1,2,4,7,13,2,3,10,15,26,1,10,31,70,133,1,2,3,7,46,0,1,3,8,22,63,
1,1,2,6,12 (1*2,2*3,3*4=12)
1,3,5,7,9,13,15,17(奇数分组吧)
1,1,1,2,4,7,13,25 (4*2-1,7*2-1,13*2-1=25)
2,3,10,15,26,39 偶数项与其前一项的比例为2:3;
1,10,31,70,133,226 后项减前项得一新数列:9,21,39,63,此新数列继续减得:12,18,24,可以看出是各项加6的等差数列,返回去就是...30,...93,...226
1,2,3,7,46,2112 (2*2-1,3*3-2,7*7-3,46*46-4)
0,1,3,8,22,63,183 (1*3-0,3*3-1,8*3-2,22*3-3,63*3-4)
1,1,2,6,42
1,3,5,7,9,13,15,17,19
0,1,1,2,4,7,13,24
1,3,5,7,9,13,15, 17, 19
0,1,1,2,4,7,13, 24
48
17,19
24
35
226
*
*
1,3,5,7,9,13,15, 17, 19
0,1,1,2,4,7,13, 24
做出来这两个
1,1,2,6,24
1,3,5,7,9,13,15, 17, 19
0,1,1,2,4,7,13,24
2,3,10,15,26,35
1,10,31,70,133,210
1,2,3,7,46,2112
0,1,3,8,22,63,185
4444444444444444444444444444444444
1,1,2,6,24
1,3,5,7,9,13,15, 17, 19
0,1,1,2,4,7,13,24
2,3,10,15,26,35
1,10,31,70,133,210
1,2,3,7,46,2112
0,1,3,8,22,63,185
1,3,5,7,9,13,15, ?, ?17.19(质数)
只会一个啊!!!我哭!
0,1,1,2,4,7,13,24,?(44)
这个的规律就是,每一位等于它前三位的总和!
1,3,5,7,9,13,15, 17, 19
0,1,1,2,4,7,13, 24
1,1,2,6,24 解: 前两位相加之后乘以1,2,3... (1+1)*1=2 , (1+2)*3=6 , (2+6)*3=24
1,3,5,7,9,13,15,17,19 解: 奇数排列(不知道对不对,因为没有11)
0,1,1,2,4,7,13,24 解: 前三位相加即可 0+1+1=2 , 1+1+2=4 , 1+2+4=7 , 2...
全部展开
1,1,2,6,24 解: 前两位相加之后乘以1,2,3... (1+1)*1=2 , (1+2)*3=6 , (2+6)*3=24
1,3,5,7,9,13,15,17,19 解: 奇数排列(不知道对不对,因为没有11)
0,1,1,2,4,7,13,24 解: 前三位相加即可 0+1+1=2 , 1+1+2=4 , 1+2+4=7 , 2+4+7=13 , 4+7+13=24
2,3,10,15,26,35 解: 每项的项数平方之后±1得此项(奇数项+1偶数项-1), (2)代表平方 1(2)+1=2 , 2(2)-1=3 , 3(2)+1=10 , 4(2)-1=15 , 5(2)+1=26 , 6(2)-1=35
1,10,31,70,133,226 解: 用后一项减前一项得数列 9,21,39,63, 再减得数列 12,18,24,X, 此数列为等差数列,所差数值为6,因此推出X=30, 继续往回推30+63=93 ,93+133=226
1,2,3,7,46,2109 解: 每项的平方减去前一项得后一项,(2)代表平方 2(2)-1=3 , 3(2)-2=7 , 7(2)-3=46 , 46(2)-7=2109
0,1,3,8,22,63,185 解: 前一项乘3之后减-1,0,1,2,3... 0*3-(-1)=1 , 1*3-0=3 , 3*3-1=8 , 8*3-2=22 , 22*3-3=63 , 63*3-4=185
收起