Hi Moses,
I'm sorry for not explaining more
1-------------------> 174,195
7-------------------> 504,315
28-------------------> 286,860
84-------------------> 26,544
210-------------------> 84
taking an example with 210------------------->84 means there are 84 numbers with the last digit such that when when first digit is changed you get 210 combos.
These are the numbers
1. x1,x2,x3,x4,x5,x6
2. x1,x2,x3,x4,x5,x7
3. x1,x2,x3,x4,x5,x8
4. x1,x2,x3,x4,x5,x9
5. x1,x2,x3,x4,x6,x7
6. x1,x2,x3,x4,x6,x8
7. x1,x2,x3,x4,x6,x9
8. x1,x2,x3,x4,x7,x8
9. x1,x2,x3,x4,x7,x9
10. x1,x2,x3,x4,x8,x9
11. x1,x2,x3,x5,x6,x7
12. x1,x2,x3,x5,x6,x8
13. x1,x2,x3,x5,x6,x9
14. x1,x2,x3,x5,x7,x8
15. x1,x2,x3,x5,x7,x9
16. x1,x2,x3,x5,x8,x9
17. x1,x2,x3,x6,x7,x8
18. x1,x2,x3,x6,x7,x9
19. x1,x2,x3,x6,x8,x9
20. x1,x2,x3,x7,x8,x9
21. x1,x2,x4,x5,x6,x7
22. x1,x2,x4,x5,x6,x8
23. x1,x2,x4,x5,x6,x9
24. x1,x2,x4,x5,x7,x8
25. x1,x2,x4,x5,x7,x9
26. x1,x2,x4,x5,x8,x9
27. x1,x2,x4,x6,x7,x8
28. x1,x2,x4,x6,x7,x9
29. x1,x2,x4,x6,x8,x9
30. x1,x2,x4,x7,x8,x9
31. x1,x2,x5,x6,x7,x8
32. x1,x2,x5,x6,x7,x9
33. x1,x2,x5,x6,x8,x9
34. x1,x2,x5,x7,x8,x9
35. x1,x2,x6,x7,x8,x9
36. x1,x3,x4,x5,x6,x7
37. x1,x3,x4,x5,x6,x8
38. x1,x3,x4,x5,x6,x9
39. x1,x3,x4,x5,x7,x8
40. x1,x3,x4,x5,x7,x9
41. x1,x3,x4,x5,x8,x9
42. x1,x3,x4,x6,x7,x8
43. x1,x3,x4,x6,x7,x9
44. x1,x3,x4,x6,x8,x9
45. x1,x3,x4,x7,x8,x9
46. x1,x3,x5,x6,x7,x8
47. x1,x3,x5,x6,x7,x9
48. x1,x3,x5,x6,x8,x9
49. x1,x3,x5,x7,x8,x9
50. x1,x3,x6,x7,x8,x9
51. x1,x4,x5,x6,x7,x8
52. x1,x4,x5,x6,x7,x9
53. x1,x4,x5,x6,x8,x9
54. x1,x4,x5,x7,x8,x9
55. x1,x4,x6,x7,x8,x9
56. x1,x5,x6,x7,x8,x9
57. x2,x3,x4,x5,x6,x7
58. x2,x3,x4,x5,x6,x8
59. x2,x3,x4,x5,x6,x9
60. x2,x3,x4,x5,x7,x8
61. x2,x3,x4,x5,x7,x9
62. x2,x3,x4,x5,x8,x9
63. x2,x3,x4,x6,x7,x8
64. x2,x3,x4,x6,x7,x9
65. x2,x3,x4,x6,x8,x9
66. x2,x3,x4,x7,x8,x9
67. x2,x3,x5,x6,x7,x8
68. x2,x3,x5,x6,x7,x9
69. x2,x3,x5,x6,x8,x9
70. x2,x3,x5,x7,x8,x9
71. x2,x3,x6,x7,x8,x9
72. x2,x4,x5,x6,x7,x8
73. x2,x4,x5,x6,x7,x9
74. x2,x4,x5,x6,x8,x9
75. x2,x4,x5,x7,x8,x9
76. x2,x4,x6,x7,x8,x9
77. x2,x5,x6,x7,x8,x9
78. x3,x4,x5,x6,x7,x8
79. x3,x4,x5,x6,x7,x9
80. x3,x4,x5,x6,x8,x9
81. x3,x4,x5,x7,x8,x9
82. x3,x4,x6,x7,x8,x9
83. x3,x5,x6,x7,x8,x9
84. x4,x5,x6,x7,x8,x9
where x ranges from 0-4 inclusive
if you take number 1 from above i.e x1,x2,x3,x4,x5,x6 the 210 possible combos are
1. 1,2,3,4,5,6
2. 1,2,3,4,5,16
3. 1,2,3,4,5,26
4. 1,2,3,4,5,36
5. 1,2,3,4,5,46
6. 1,2,3,4,15,16
7. 1,2,3,4,15,26
8. 1,2,3,4,15,36
9. 1,2,3,4,15,46
10. 1,2,3,4,25,26
11. 1,2,3,4,25,36
12. 1,2,3,4,25,46
13. 1,2,3,4,35,36
14. 1,2,3,4,35,46
15. 1,2,3,4,45,46
16. 1,2,3,14,15,16
17. 1,2,3,14,15,26
18. 1,2,3,14,15,36
19. 1,2,3,14,15,46
20. 1,2,3,14,25,26
21. 1,2,3,14,25,36
22. 1,2,3,14,25,46
23. 1,2,3,14,35,36
24. 1,2,3,14,35,46
25. 1,2,3,14,45,46
26. 1,2,3,24,25,26
27. 1,2,3,24,25,36
28. 1,2,3,24,25,46
29. 1,2,3,24,35,36
30. 1,2,3,24,35,46
31. 1,2,3,24,45,46
32. 1,2,3,34,35,36
33. 1,2,3,34,35,46
34. 1,2,3,34,45,46
35. 1,2,3,44,45,46
36. 1,2,13,14,15,16
37. 1,2,13,14,15,26
38. 1,2,13,14,15,36
39. 1,2,13,14,15,46
40. 1,2,13,14,25,26
41. 1,2,13,14,25,36
42. 1,2,13,14,25,46
43. 1,2,13,14,35,36
44. 1,2,13,14,35,46
45. 1,2,13,14,45,46
46. 1,2,13,24,25,26
47. 1,2,13,24,25,36
48. 1,2,13,24,25,46
49. 1,2,13,24,35,36
50. 1,2,13,24,35,46
51. 1,2,13,24,45,46
52. 1,2,13,34,35,36
53. 1,2,13,34,35,46
54. 1,2,13,34,45,46
55. 1,2,13,44,45,46
56. 1,2,23,24,25,26
57. 1,2,23,24,25,36
58. 1,2,23,24,25,46
59. 1,2,23,24,35,36
60. 1,2,23,24,35,46
61. 1,2,23,24,45,46
62. 1,2,23,34,35,36
63. 1,2,23,34,35,46
64. 1,2,23,34,45,46
65. 1,2,23,44,45,46
66. 1,2,33,34,35,36
67. 1,2,33,34,35,46
68. 1,2,33,34,45,46
69. 1,2,33,44,45,46
70. 1,2,43,44,45,46
71. 1,12,13,14,15,16
72. 1,12,13,14,15,26
73. 1,12,13,14,15,36
74. 1,12,13,14,15,46
75. 1,12,13,14,25,26
76. 1,12,13,14,25,36
77. 1,12,13,14,25,46
78. 1,12,13,14,35,36
79. 1,12,13,14,35,46
80. 1,12,13,14,45,46
81. 1,12,13,24,25,26
82. 1,12,13,24,25,36
83. 1,12,13,24,25,46
84. 1,12,13,24,35,36
85. 1,12,13,24,35,46
86. 1,12,13,24,45,46
87. 1,12,13,34,35,36
88. 1,12,13,34,35,46
89. 1,12,13,34,45,46
90. 1,12,13,44,45,46
91. 1,12,23,24,25,26
92. 1,12,23,24,25,36
93. 1,12,23,24,25,46
94. 1,12,23,24,35,36
95. 1,12,23,24,35,46
96. 1,12,23,24,45,46
97. 1,12,23,34,35,36
98. 1,12,23,34,35,46
99. 1,12,23,34,45,46
100. 1,12,23,44,45,46
101. 1,12,33,34,35,36
102. 1,12,33,34,35,46
103. 1,12,33,34,45,46
104. 1,12,33,44,45,46
105. 1,12,43,44,45,46
106. 1,22,23,24,25,26
107. 1,22,23,24,25,36
108. 1,22,23,24,25,46
109. 1,22,23,24,35,36
110. 1,22,23,24,35,46
111. 1,22,23,24,45,46
112. 1,22,23,34,35,36
113. 1,22,23,34,35,46
114. 1,22,23,34,45,46
115. 1,22,23,44,45,46
116. 1,22,33,34,35,36
117. 1,22,33,34,35,46
118. 1,22,33,34,45,46
119. 1,22,33,44,45,46
120. 1,22,43,44,45,46
121. 1,32,33,34,35,36
122. 1,32,33,34,35,46
123. 1,32,33,34,45,46
124. 1,32,33,44,45,46
125. 1,32,43,44,45,46
126. 1,42,43,44,45,46
127. 11,12,13,14,15,16
128. 11,12,13,14,15,26
129. 11,12,13,14,15,36
130. 11,12,13,14,15,46
131. 11,12,13,14,25,26
132. 11,12,13,14,25,36
133. 11,12,13,14,25,46
134. 11,12,13,14,35,36
135. 11,12,13,14,35,46
136. 11,12,13,14,45,46
137. 11,12,13,24,25,26
138. 11,12,13,24,25,36
139. 11,12,13,24,25,46
140. 11,12,13,24,35,36
141. 11,12,13,24,35,46
142. 11,12,13,24,45,46
143. 11,12,13,34,35,36
144. 11,12,13,34,35,46
145. 11,12,13,34,45,46
146. 11,12,13,44,45,46
147. 11,12,23,24,25,26
148. 11,12,23,24,25,36
149. 11,12,23,24,25,46
150. 11,12,23,24,35,36
151. 11,12,23,24,35,46
152. 11,12,23,24,45,46
153. 11,12,23,34,35,36
154. 11,12,23,34,35,46
155. 11,12,23,34,45,46
156. 11,12,23,44,45,46
157. 11,12,33,34,35,36
158. 11,12,33,34,35,46
159. 11,12,33,34,45,46
160. 11,12,33,44,45,46
161. 11,12,43,44,45,46
162. 11,22,23,24,25,26
163. 11,22,23,24,25,36
164. 11,22,23,24,25,46
165. 11,22,23,24,35,36
166. 11,22,23,24,35,46
167. 11,22,23,24,45,46
168. 11,22,23,34,35,36
169. 11,22,23,34,35,46
170. 11,22,23,34,45,46
171. 11,22,23,44,45,46
172. 11,22,33,34,35,36
173. 11,22,33,34,35,46
174. 11,22,33,34,45,46
175. 11,22,33,44,45,46
176. 11,22,43,44,45,46
177. 11,32,33,34,35,36
178. 11,32,33,34,35,46
179. 11,32,33,34,45,46
180. 11,32,33,44,45,46
181. 11,32,43,44,45,46
182. 11,42,43,44,45,46
183. 21,22,23,24,25,26
184. 21,22,23,24,25,36
185. 21,22,23,24,25,46
186. 21,22,23,24,35,36
187. 21,22,23,24,35,46
188. 21,22,23,24,45,46
189. 21,22,23,34,35,36
190. 21,22,23,34,35,46
191. 21,22,23,34,45,46
192. 21,22,23,44,45,46
193. 21,22,33,34,35,36
194. 21,22,33,34,35,46
195. 21,22,33,34,45,46
196. 21,22,33,44,45,46
197. 21,22,43,44,45,46
198. 21,32,33,34,35,36
199. 21,32,33,34,35,46
200. 21,32,33,34,45,46
201. 21,32,33,44,45,46
202. 21,32,43,44,45,46
203. 21,42,43,44,45,46
204. 31,32,33,34,35,36
205. 31,32,33,34,35,46
206. 31,32,33,34,45,46
207. 31,32,33,44,45,46
208. 31,32,43,44,45,46
209. 31,42,43,44,45,46
210. 41,42,43,44,45,46
Hope that helps
Thanks
I'm sorry for not explaining more
1-------------------> 174,195
7-------------------> 504,315
28-------------------> 286,860
84-------------------> 26,544
210-------------------> 84
taking an example with 210------------------->84 means there are 84 numbers with the last digit such that when when first digit is changed you get 210 combos.
These are the numbers
1. x1,x2,x3,x4,x5,x6
2. x1,x2,x3,x4,x5,x7
3. x1,x2,x3,x4,x5,x8
4. x1,x2,x3,x4,x5,x9
5. x1,x2,x3,x4,x6,x7
6. x1,x2,x3,x4,x6,x8
7. x1,x2,x3,x4,x6,x9
8. x1,x2,x3,x4,x7,x8
9. x1,x2,x3,x4,x7,x9
10. x1,x2,x3,x4,x8,x9
11. x1,x2,x3,x5,x6,x7
12. x1,x2,x3,x5,x6,x8
13. x1,x2,x3,x5,x6,x9
14. x1,x2,x3,x5,x7,x8
15. x1,x2,x3,x5,x7,x9
16. x1,x2,x3,x5,x8,x9
17. x1,x2,x3,x6,x7,x8
18. x1,x2,x3,x6,x7,x9
19. x1,x2,x3,x6,x8,x9
20. x1,x2,x3,x7,x8,x9
21. x1,x2,x4,x5,x6,x7
22. x1,x2,x4,x5,x6,x8
23. x1,x2,x4,x5,x6,x9
24. x1,x2,x4,x5,x7,x8
25. x1,x2,x4,x5,x7,x9
26. x1,x2,x4,x5,x8,x9
27. x1,x2,x4,x6,x7,x8
28. x1,x2,x4,x6,x7,x9
29. x1,x2,x4,x6,x8,x9
30. x1,x2,x4,x7,x8,x9
31. x1,x2,x5,x6,x7,x8
32. x1,x2,x5,x6,x7,x9
33. x1,x2,x5,x6,x8,x9
34. x1,x2,x5,x7,x8,x9
35. x1,x2,x6,x7,x8,x9
36. x1,x3,x4,x5,x6,x7
37. x1,x3,x4,x5,x6,x8
38. x1,x3,x4,x5,x6,x9
39. x1,x3,x4,x5,x7,x8
40. x1,x3,x4,x5,x7,x9
41. x1,x3,x4,x5,x8,x9
42. x1,x3,x4,x6,x7,x8
43. x1,x3,x4,x6,x7,x9
44. x1,x3,x4,x6,x8,x9
45. x1,x3,x4,x7,x8,x9
46. x1,x3,x5,x6,x7,x8
47. x1,x3,x5,x6,x7,x9
48. x1,x3,x5,x6,x8,x9
49. x1,x3,x5,x7,x8,x9
50. x1,x3,x6,x7,x8,x9
51. x1,x4,x5,x6,x7,x8
52. x1,x4,x5,x6,x7,x9
53. x1,x4,x5,x6,x8,x9
54. x1,x4,x5,x7,x8,x9
55. x1,x4,x6,x7,x8,x9
56. x1,x5,x6,x7,x8,x9
57. x2,x3,x4,x5,x6,x7
58. x2,x3,x4,x5,x6,x8
59. x2,x3,x4,x5,x6,x9
60. x2,x3,x4,x5,x7,x8
61. x2,x3,x4,x5,x7,x9
62. x2,x3,x4,x5,x8,x9
63. x2,x3,x4,x6,x7,x8
64. x2,x3,x4,x6,x7,x9
65. x2,x3,x4,x6,x8,x9
66. x2,x3,x4,x7,x8,x9
67. x2,x3,x5,x6,x7,x8
68. x2,x3,x5,x6,x7,x9
69. x2,x3,x5,x6,x8,x9
70. x2,x3,x5,x7,x8,x9
71. x2,x3,x6,x7,x8,x9
72. x2,x4,x5,x6,x7,x8
73. x2,x4,x5,x6,x7,x9
74. x2,x4,x5,x6,x8,x9
75. x2,x4,x5,x7,x8,x9
76. x2,x4,x6,x7,x8,x9
77. x2,x5,x6,x7,x8,x9
78. x3,x4,x5,x6,x7,x8
79. x3,x4,x5,x6,x7,x9
80. x3,x4,x5,x6,x8,x9
81. x3,x4,x5,x7,x8,x9
82. x3,x4,x6,x7,x8,x9
83. x3,x5,x6,x7,x8,x9
84. x4,x5,x6,x7,x8,x9
where x ranges from 0-4 inclusive
if you take number 1 from above i.e x1,x2,x3,x4,x5,x6 the 210 possible combos are
1. 1,2,3,4,5,6
2. 1,2,3,4,5,16
3. 1,2,3,4,5,26
4. 1,2,3,4,5,36
5. 1,2,3,4,5,46
6. 1,2,3,4,15,16
7. 1,2,3,4,15,26
8. 1,2,3,4,15,36
9. 1,2,3,4,15,46
10. 1,2,3,4,25,26
11. 1,2,3,4,25,36
12. 1,2,3,4,25,46
13. 1,2,3,4,35,36
14. 1,2,3,4,35,46
15. 1,2,3,4,45,46
16. 1,2,3,14,15,16
17. 1,2,3,14,15,26
18. 1,2,3,14,15,36
19. 1,2,3,14,15,46
20. 1,2,3,14,25,26
21. 1,2,3,14,25,36
22. 1,2,3,14,25,46
23. 1,2,3,14,35,36
24. 1,2,3,14,35,46
25. 1,2,3,14,45,46
26. 1,2,3,24,25,26
27. 1,2,3,24,25,36
28. 1,2,3,24,25,46
29. 1,2,3,24,35,36
30. 1,2,3,24,35,46
31. 1,2,3,24,45,46
32. 1,2,3,34,35,36
33. 1,2,3,34,35,46
34. 1,2,3,34,45,46
35. 1,2,3,44,45,46
36. 1,2,13,14,15,16
37. 1,2,13,14,15,26
38. 1,2,13,14,15,36
39. 1,2,13,14,15,46
40. 1,2,13,14,25,26
41. 1,2,13,14,25,36
42. 1,2,13,14,25,46
43. 1,2,13,14,35,36
44. 1,2,13,14,35,46
45. 1,2,13,14,45,46
46. 1,2,13,24,25,26
47. 1,2,13,24,25,36
48. 1,2,13,24,25,46
49. 1,2,13,24,35,36
50. 1,2,13,24,35,46
51. 1,2,13,24,45,46
52. 1,2,13,34,35,36
53. 1,2,13,34,35,46
54. 1,2,13,34,45,46
55. 1,2,13,44,45,46
56. 1,2,23,24,25,26
57. 1,2,23,24,25,36
58. 1,2,23,24,25,46
59. 1,2,23,24,35,36
60. 1,2,23,24,35,46
61. 1,2,23,24,45,46
62. 1,2,23,34,35,36
63. 1,2,23,34,35,46
64. 1,2,23,34,45,46
65. 1,2,23,44,45,46
66. 1,2,33,34,35,36
67. 1,2,33,34,35,46
68. 1,2,33,34,45,46
69. 1,2,33,44,45,46
70. 1,2,43,44,45,46
71. 1,12,13,14,15,16
72. 1,12,13,14,15,26
73. 1,12,13,14,15,36
74. 1,12,13,14,15,46
75. 1,12,13,14,25,26
76. 1,12,13,14,25,36
77. 1,12,13,14,25,46
78. 1,12,13,14,35,36
79. 1,12,13,14,35,46
80. 1,12,13,14,45,46
81. 1,12,13,24,25,26
82. 1,12,13,24,25,36
83. 1,12,13,24,25,46
84. 1,12,13,24,35,36
85. 1,12,13,24,35,46
86. 1,12,13,24,45,46
87. 1,12,13,34,35,36
88. 1,12,13,34,35,46
89. 1,12,13,34,45,46
90. 1,12,13,44,45,46
91. 1,12,23,24,25,26
92. 1,12,23,24,25,36
93. 1,12,23,24,25,46
94. 1,12,23,24,35,36
95. 1,12,23,24,35,46
96. 1,12,23,24,45,46
97. 1,12,23,34,35,36
98. 1,12,23,34,35,46
99. 1,12,23,34,45,46
100. 1,12,23,44,45,46
101. 1,12,33,34,35,36
102. 1,12,33,34,35,46
103. 1,12,33,34,45,46
104. 1,12,33,44,45,46
105. 1,12,43,44,45,46
106. 1,22,23,24,25,26
107. 1,22,23,24,25,36
108. 1,22,23,24,25,46
109. 1,22,23,24,35,36
110. 1,22,23,24,35,46
111. 1,22,23,24,45,46
112. 1,22,23,34,35,36
113. 1,22,23,34,35,46
114. 1,22,23,34,45,46
115. 1,22,23,44,45,46
116. 1,22,33,34,35,36
117. 1,22,33,34,35,46
118. 1,22,33,34,45,46
119. 1,22,33,44,45,46
120. 1,22,43,44,45,46
121. 1,32,33,34,35,36
122. 1,32,33,34,35,46
123. 1,32,33,34,45,46
124. 1,32,33,44,45,46
125. 1,32,43,44,45,46
126. 1,42,43,44,45,46
127. 11,12,13,14,15,16
128. 11,12,13,14,15,26
129. 11,12,13,14,15,36
130. 11,12,13,14,15,46
131. 11,12,13,14,25,26
132. 11,12,13,14,25,36
133. 11,12,13,14,25,46
134. 11,12,13,14,35,36
135. 11,12,13,14,35,46
136. 11,12,13,14,45,46
137. 11,12,13,24,25,26
138. 11,12,13,24,25,36
139. 11,12,13,24,25,46
140. 11,12,13,24,35,36
141. 11,12,13,24,35,46
142. 11,12,13,24,45,46
143. 11,12,13,34,35,36
144. 11,12,13,34,35,46
145. 11,12,13,34,45,46
146. 11,12,13,44,45,46
147. 11,12,23,24,25,26
148. 11,12,23,24,25,36
149. 11,12,23,24,25,46
150. 11,12,23,24,35,36
151. 11,12,23,24,35,46
152. 11,12,23,24,45,46
153. 11,12,23,34,35,36
154. 11,12,23,34,35,46
155. 11,12,23,34,45,46
156. 11,12,23,44,45,46
157. 11,12,33,34,35,36
158. 11,12,33,34,35,46
159. 11,12,33,34,45,46
160. 11,12,33,44,45,46
161. 11,12,43,44,45,46
162. 11,22,23,24,25,26
163. 11,22,23,24,25,36
164. 11,22,23,24,25,46
165. 11,22,23,24,35,36
166. 11,22,23,24,35,46
167. 11,22,23,24,45,46
168. 11,22,23,34,35,36
169. 11,22,23,34,35,46
170. 11,22,23,34,45,46
171. 11,22,23,44,45,46
172. 11,22,33,34,35,36
173. 11,22,33,34,35,46
174. 11,22,33,34,45,46
175. 11,22,33,44,45,46
176. 11,22,43,44,45,46
177. 11,32,33,34,35,36
178. 11,32,33,34,35,46
179. 11,32,33,34,45,46
180. 11,32,33,44,45,46
181. 11,32,43,44,45,46
182. 11,42,43,44,45,46
183. 21,22,23,24,25,26
184. 21,22,23,24,25,36
185. 21,22,23,24,25,46
186. 21,22,23,24,35,36
187. 21,22,23,24,35,46
188. 21,22,23,24,45,46
189. 21,22,23,34,35,36
190. 21,22,23,34,35,46
191. 21,22,23,34,45,46
192. 21,22,23,44,45,46
193. 21,22,33,34,35,36
194. 21,22,33,34,35,46
195. 21,22,33,34,45,46
196. 21,22,33,44,45,46
197. 21,22,43,44,45,46
198. 21,32,33,34,35,36
199. 21,32,33,34,35,46
200. 21,32,33,34,45,46
201. 21,32,33,44,45,46
202. 21,32,43,44,45,46
203. 21,42,43,44,45,46
204. 31,32,33,34,35,36
205. 31,32,33,34,35,46
206. 31,32,33,34,45,46
207. 31,32,33,44,45,46
208. 31,32,43,44,45,46
209. 31,42,43,44,45,46
210. 41,42,43,44,45,46
Hope that helps
Thanks