Mathematics · Permutations and Combinations
If a password consists of 3 letters followed by 3 digits, how many passwords can be formed without repetition?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 126 × 26 × 26 × 10 × 10 × 10
- 226 × 25 × 24 × 9 × 8 × 7
- 326 × 25 × 24 × 10 × 9 × 8✓
- 426 × 25 × 24 × 10 × 10 × 10
Correct answer
26 × 25 × 24 × 10 × 9 × 8
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