We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.


Prove that each physical number is greater than or equal to the number of digits (in the sense that the number 1029 is greater than 4, the number of digits)

 Nov 9, 2018

Suppose there are n digits.


The smallest possible n digit number is 1 followed by n-1 zeros.


The value of this nuber is 10n-1 >= n, with equality at n=1

 Nov 10, 2018

4 Online Users