Question 1200344
.

<H3>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;By the way and for your info:</H3>

<pre>
    In Math, 2,5 is not a number: such writing represents TWO numbers, separated by comma.


    If you want to represent ONE number  2{{{1/2}}}  as a decimal, write  2.5
    (using decimal point, or "dot").


    A comma is used in Math writing for TOTALLY DIFFERENT purposes.
</pre>