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

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answers
flagAustria
8%
0%
21%
69%
23
flagSwitzerland
0%
0%
29%
64%
17
flagGermany
2%
5%
34%
56%
149
flagPakistan
25%
6%
12%
56%
16
flagAustralia
0%
11%
33%
55%
18
flagFrance
0%
0%
45%
54%
11
flagUnknown
5%
5%
35%
52%
17
flagthe United States
5%
7%
36%
48%
168
flagPoland
5%
6%
43%
44%
12251
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%
56%
31%
74
flagGhana
9%
0%
63%
27%
11