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Question: Answered & Verified by Expert
The number of integers $n$ with $100 \leq n \leq 999$ and containing at most two distinct digits is
MathematicsPermutation CombinationKVPYKVPY 2013 (SB/SX)
Options:
  • A 252
  • B 280
  • C 324
  • D 360
Solution:
1318 Upvotes Verified Answer
The correct answer is: 252
Total Integers $=999-99=900$
Total Integers in which all distinct digits


so $900-648=252$

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