How many integers greater than 99 and less than 1000 contain neither the digit 1 nor the digit 2?
A.
392
B.
448
C.
512
D.
620
Exam No：2020 First Round Grade 5 Year：2020 Question No：34
Answer:
B
Knowledge points:
G5 - Data - Systematic Listing & Combinations
Solution:
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