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A suit case combination lock consists of a 5 digit code (4 numbers and then a letter). Each digit

can be any number 0-9. The only exception is that all four digits cannot be the same (e.g. the
combination can't be 1111, 2222, etc.) and you can't use the letter O because it looks too much
like a zero. How many combinations are possible on a standard combination lock?

User Ravistm
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Answer: 1,992

Step-by-step explanation:

User JoseBazBaz
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