Multiple choice general knowledge

How many three digit numbers do not change even if the digits are reversed?

  1. 81

  2. 90

  3. 100

  4. 10

  5. 300
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A number is unchanged when reversed (palindromic) if first=last digit. For 3-digit numbers ABC with A=C: A can be 1-9 (not 0), B can be 0-9, C=A. Total: 9 × 10 = 90 numbers.

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