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Question

What is the smallest 4 digit number ?
  1. 1000

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Solution

The correct option is A 1000
For the smallest 4 digit number, we use the smallest possible digit at all places .

Bur 0000 = 0, which is not a four digit number.

We have to use a smallest non-zero digit at 1000s place. Smallest non zero digit is 1

Thus, smallest 4 digit number is 1000

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