Increasing Combination

[dinesh4you]

Dear experts, if i have fegures 1 to 0 zero is bigger then 9 what will be formula of combination in 4 digits? For example 1234, 1235, 1236....... 6789, 7890.....
I want to search how many 4 digit combination can be create from 1234567890 where zero is highest number and 4 digit all sets are in increasing order. For example 1234 is right but 1243 is wrong.

 

[awoohaw]

wouldn't it be 10*9*8*7 ?

 

[shaowu459]

there are 210 combinations, choose 4 in 10:

工作簿1
	A	B	C	D
1	1	2	3	4
2	1	2	3	5
3	1	2	3	6
4	1	2	3	7
5	1	2	3	8
6	1	2	3	9
7	1	2	3	0
8	1	2	4	5
9	1	2	4	6
10	1	2	4	7
11	1	2	4	8
12	1	2	4	9
13	1	2	4	0
14	1	2	5	6
15	1	2	5	7
16	1	2	5	8
17	1	2	5	9
18	1	2	5	0
19	1	2	6	7
20	1	2	6	8
21	1	2	6	9
22	1	2	6	0
23	1	2	7	8
24	1	2	7	9
25	1	2	7	0
26	1	2	8	9
27	1	2	8	0
28	1	2	9	0
29	1	3	4	5
30	1	3	4	6
31	1	3	4	7
32	1	3	4	8
33	1	3	4	9
34	1	3	4	0
35	1	3	5	6
36	1	3	5	7
37	1	3	5	8
38	1	3	5	9
39	1	3	5	0
40	1	3	6	7
41	1	3	6	8
42	1	3	6	9
43	1	3	6	0
44	1	3	7	8
45	1	3	7	9
46	1	3	7	0
47	1	3	8	9
48	1	3	8	0
49	1	3	9	0
50	1	4	5	6
51	1	4	5	7
52	1	4	5	8
53	1	4	5	9
54	1	4	5	0
55	1	4	6	7
56	1	4	6	8
57	1	4	6	9
58	1	4	6	0
59	1	4	7	8
60	1	4	7	9
61	1	4	7	0
62	1	4	8	9
63	1	4	8	0
64	1	4	9	0
65	1	5	6	7
66	1	5	6	8
67	1	5	6	9
68	1	5	6	0
69	1	5	7	8
70	1	5	7	9
71	1	5	7	0
72	1	5	8	9
73	1	5	8	0
74	1	5	9	0
75	1	6	7	8
76	1	6	7	9
77	1	6	7	0
78	1	6	8	9
79	1	6	8	0
80	1	6	9	0
81	1	7	8	9
82	1	7	8	0
83	1	7	9	0
84	1	8	9	0
85	2	3	4	5
86	2	3	4	6
87	2	3	4	7
88	2	3	4	8
89	2	3	4	9
90	2	3	4	0
91	2	3	5	6
92	2	3	5	7
93	2	3	5	8
94	2	3	5	9
95	2	3	5	0
96	2	3	6	7
97	2	3	6	8
98	2	3	6	9
99	2	3	6	0
100	2	3	7	8
101	2	3	7	9
102	2	3	7	0
103	2	3	8	9
104	2	3	8	0
105	2	3	9	0
106	2	4	5	6
107	2	4	5	7
108	2	4	5	8
109	2	4	5	9
110	2	4	5	0
111	2	4	6	7
112	2	4	6	8
113	2	4	6	9
114	2	4	6	0
115	2	4	7	8
116	2	4	7	9
117	2	4	7	0
118	2	4	8	9
119	2	4	8	0
120	2	4	9	0
121	2	5	6	7
122	2	5	6	8
123	2	5	6	9
124	2	5	6	0
125	2	5	7	8
126	2	5	7	9
127	2	5	7	0
128	2	5	8	9
129	2	5	8	0
130	2	5	9	0
131	2	6	7	8
132	2	6	7	9
133	2	6	7	0
134	2	6	8	9
135	2	6	8	0
136	2	6	9	0
137	2	7	8	9
138	2	7	8	0
139	2	7	9	0
140	2	8	9	0
141	3	4	5	6
142	3	4	5	7
143	3	4	5	8
144	3	4	5	9
145	3	4	5	0
146	3	4	6	7
147	3	4	6	8
148	3	4	6	9
149	3	4	6	0
150	3	4	7	8
151	3	4	7	9
152	3	4	7	0
153	3	4	8	9
154	3	4	8	0
155	3	4	9	0
156	3	5	6	7
157	3	5	6	8
158	3	5	6	9
159	3	5	6	0
160	3	5	7	8
161	3	5	7	9
162	3	5	7	0
163	3	5	8	9
164	3	5	8	0
165	3	5	9	0
166	3	6	7	8
167	3	6	7	9
168	3	6	7	0
169	3	6	8	9
170	3	6	8	0
171	3	6	9	0
172	3	7	8	9
173	3	7	8	0
174	3	7	9	0
175	3	8	9	0
176	4	5	6	7
177	4	5	6	8
178	4	5	6	9
179	4	5	6	0
180	4	5	7	8
181	4	5	7	9
182	4	5	7	0
183	4	5	8	9
184	4	5	8	0
185	4	5	9	0
186	4	6	7	8
187	4	6	7	9
188	4	6	7	0
189	4	6	8	9
190	4	6	8	0
191	4	6	9	0
192	4	7	8	9
193	4	7	8	0
194	4	7	9	0
195	4	8	9	0
196	5	6	7	8
197	5	6	7	9
198	5	6	7	0
199	5	6	8	9
200	5	6	8	0
201	5	6	9	0
202	5	7	8	9
203	5	7	8	0
204	5	7	9	0
205	5	8	9	0
206	6	7	8	9
207	6	7	8	0
208	6	7	9	0
209	6	8	9	0
210	7	8	9	0
Sheet1