Mathematics · Permutations and Combinations
In a center code classification system, the system uses 6-digit numerical codes. If the first digit cannot be 0, what is the maximum number of unique center codes possible?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 19,00,000✓
- 29,99,999
- 310,00,000
- 48,99,999
Correct answer
9,00,000
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