育才学习网1. 11
你好 不懂 欢迎追问1one2 two3 three4 four5 five6 six7 seven8 eight9 nine10 ten11 eleven12 twelve13 thirteen14 fourteen15 fifteen16 sixteen17 seventeen18 eighteen19 nineteen20 twenty21 twenty -one22 twenty- two23 twenty- three24 twenty- four25 twenty -five26 twenty- six27 twenty -seven28 twenty- eight29 twenty -nine30 thirty31 thirty one32 thirty two33 thirty three34 thirty four35 thirty five36 thirty six37 thirty seven38 thirty eight39 thirty nine40 forty41 forty one42 forty two43 forty three44 forty four45 forty five46 forty six47 forty seven48 forty eight49 forty nine50 fifty51 fifty one52 fifty two53 fifty three54 fifty four55 fifty five56 fifty six57 fifty seven58 fifty eight59 fifty nine60 sixty61 sixty one62 sixty two63 sixty three64 sixty four65 sixty five66 sixty six67 sixty seven68 sixty eight69 sixty nine70 seventy71 seventy one72 seventy two73 seventy three74 seventy four75 seventy five76 seventy six77 seventy seven78 seventy eight79 seventy nine80 eighty81 eighty one82 eighty two83 eighty three84 eighty four85 eighty five86 eighty six87 eighty seven88 eighty eight89 eighty nine90 ninety91 ninety one92 ninety two93 ninety three94 ninety four95 ninety five96 ninety six97 ninety seven98 ninety eight99 ninety nine100 one hundred。
2. 2 5 8 11 14
2= 3X1-1。。。。.第一项
5= 3X2-1。。。。.第二项
8= 3X3-1。。。。.第三项
11=3X4-1。。。。.第四项
14=3X5-1。。。。.第五项
56=3X19-1。。。。.第19项
59=3X20-1。。。。.第20项
m=3n-1。。。。。。第n项
3. 11~99的英文单词怎么写
11 eleven
12 twelve
13 thirteen
14 fourteen
15 fifteen
16 sixteen
17 seventeen
18 eighteen
19 nineteen
20 twenty
21 twenty-one
22 twenty- two
23 twenty- three
24 twenty- four
25 twenty- five
26 twenty- six
27 twenty- seven
28 twenty- eight
29 twenty- nine
30 thirty
31 thirty- one
32 thirty- two
33 thirty- three
34 thirty- four
35 thirty- five
36 thirty- six
37 thirty- seven
38 thirty- eight
39 thirty- nine
40 forty
41 forty- one
42 forty- two
43 forty- three
44 forty- four
45 forty- five
46 forty- six
47 forty- seven
48 forty- eight
49 forty- nine
50 fifty
51 fifty- one
52 fifty- two
53 fifty- three
54 fifty- four
55 fifty- five
56 fifty- six
57 fifty- seven
58 fifty- eight
59 fifty- nine
60 sixty
61 sixty- one
62 sixty- two
63 sixty- three
64 sixty- four
65 sixty- five
66 sixty- six
67 sixty- seven
68 sixty- eight
69 sixty- nine
70 seventy
71 seventy- one
72 seventy- two
73 seventy- three
74 seventy- four
75 seventy- five
76 seventy- six
77 seventy- seven
78 seventy- eight
79 seventy- nine
80 eighty
81 eighty- one
82 eighty- two
83 eighty- three
84 eighty- four
85 eighty- five
86 eighty- six
87 eighty- seven
88 eighty- eight
89 eighty- nine
90 ninety
91 ninety-one
92 ninety- two
93 ninety- three
94 ninety- four
95 ninety- five
96 ninety- six
97 ninety- seven
98 ninety- eight
99 ninety- nine
4. 如何证明11
命题不成立= =
156=12*13不是整数的平方……
您写错了一点吧……应该是n-1个5……
先找规律猜测结论：
1156=34^2
111556=334^2
……
猜测：11……1155……56是33……34(n位数，其中有n-1个3)的平方
证明的时候可以求33……34的平方，再一步一步反过来写
如下：
11……1155……56
=11……1122……22+33……34
=33……3366……66÷3+33……34
=(33……3400……00-33……34)÷3+33……34
=33……34*99……99÷3+33……34
=33……34*33……33+33……34
=33……34*(33……33+1)
=33……34^2