MCQ
Mark the correct alternative in the following:
The smallest three digit number having three distinct digits is:
  • A
    $123$
  • B
    $101$
  • $102$
  • D
    $201$

Answer

Correct option: C.
$102$

The three distinct smallest digits are $0, 1$ and $2.$ To form a smallest number using these digits, we need to arrange them in ascending order, but by this we get $012,$ which results in a two-digit number. So, the smallest three-digit number having distinct digits is $102.$

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