In numbers the purpose of 0 is a positional place value holder that as for example we see the difference of 207 and 27
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To put the leftmost 1 in its place - the hundred's place in this case.
binary 0 1
You cannot, since "x equals 0" and "y equals 0" are NOT inequalities!If x and y are counts of things, or measures (such as length) which must be positive then the reason for such constraints should be obvious.
To check whether TCP/IP is correctly installed. 127.0.0.1 refers to your local machine, so if TCP/IP works, the ping should always be successful.
The purpose is to scare people