GMAT 考满分题库

Magoosh - 数学PS - 328
The sum of all the digits of the integers from 18 to 21 inclusive is 24 (1+8 + 1+9 + 2+0 + 2+1 = 24). What is the sum of all the digits of the integers from 0 to 99 inclusive?
  • A450
  • B810
  • C900
  • D1000
  • E1100
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正确答案: C

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