How many possible code combinations are there for this kind of lock?

999
1000
9999
10000
The possible codes are from 0000 to 9999 inclusive. There are 10 possibilities for each ring, thus there are 10*10*10*10 possible codes.
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Answers by country

999
1000
9999
10000
answers
flagAustria
9%
0%
22%
68%
22
flagSwitzerland
0%
0%
29%
64%
17
flagPakistan
25%
6%
12%
56%
16
flagAustralia
0%
11%
33%
55%
18
flagFrance
0%
0%
45%
54%
11
flagGermany
2%
5%
38%
52%
135
flagUnknown
5%
5%
35%
52%
17
flagthe United States
6%
7%
36%
49%
165
flagPoland
5%
6%
43%
44%
12221
flagIndia
6%
8%
42%
40%
105
flagthe Netherlands
0%
6%
53%
40%
15
flagCanada
30%
10%
20%
40%
10
flagGreece
14%
0%
50%
35%
14
flagthe Philippines
0%
14%
52%
33%
21
flagthe United Kingdom
4%
8%
55%
31%
72
flagGhana
9%
0%
63%
27%
11