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How many three-digit perfect squares have all three digits equal (like 111, 222, …, 999)?

Class 8Properties of Square NumbersSquares and Roots
  • A1
  • B2
  • C0
  • D3

Step-by-Step Solution

The repdigit three-digit numbers are 111, 222, ..., 999. Checking each, none is a perfect square (e.g. 444, 999 are not squares). So the answer is 0.
Answer: C) 0

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