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A company plans to assign identification numbers to its employees. Each number is to consist of four different digits from 0 to 9, inclusive, except that the first digit cannot be 0. How many different identification numbers are possible?
(A) 3,024
(B) 4,536
(C) 5,040
(D) 9,000
(E) 10,000
OA B
Source: GMAT Prep
(A) 3,024
(B) 4,536
(C) 5,040
(D) 9,000
(E) 10,000
OA B
Source: GMAT Prep
