Question

What is the smallest 4-digit number with no digit the same

Answer 1

It could be 1023

To get the lowest number, we know that the thousandths place should be 1. The hundredths place should be lowest too. As 1 is there in thousandths place, 0 is chosen for hundredths place. Similarly, the other two numbers are chosen.

Hope this helps!

Thanks for the edit sanjolinagpal

Answer 2

0001 or 0000 is the smallest digit