GMAT 考满分题库

- 数学PS -
A six-digit code consists of four numbers and two letters. Each number comes from the numbers 1 to 9. Both letters come from 26 lowercase letters. How many different ways are there to create this code?
  • A29484000
  • B48968000
  • C58968000
  • D68961200
  • E70963776
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正确答案: E

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