hard · GMAT Quant
A research study labels its 10 subjects using 5-character codes from M, N, O, P, Q, 5, 6, 7, 8, 9. Each character is distinct. If the first character must be a consonant and the last character must be a multiple of 3
How many valid codes can be assigned?
- 2,688
- 6,720
- 5,376
- 30,240
- 1,344
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