<PRE><B>Question 1020158</B>
&lt;pre&gt;
I&#39;m not familiar with either of your terms

&quot;aparmey number&quot; or &quot;parimey symbel&quot;.

22/7 is a &lt;i&gt;&lt;b&gt;rational&lt;/i&gt;&lt;/b&gt; number because it is the &lt;i&gt;&lt;b&gt;ratio&lt;/i&gt;&lt;/b&gt; of
two integers, 22 and 7.

However &lt;font face=&quot;symbol&quot;&gt;p&lt;/font&gt; is an &lt;i&gt;&lt;b&gt;irrational&lt;/i&gt;&lt;/b&gt; number.

Compare them:

Look at 22/7

22/7 = 3.1428571428571428571428571428571428571428571428571428571428571428571428571428571428571428571428571428571428571428...

Notice that it repeats the block of digits &quot;142857&quot; over and over.
Rational numbers if divided out either terminate or they repeat a
block of digits forever.

Now look at &lt;font face=&quot;symbol&quot;&gt;p&lt;/font&gt; 

&lt;font face=&quot;symbol&quot;&gt;p&lt;/font&gt; = 
3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679821480865132...

It doesn&#39;t repeat any block of digits forever.

Both those long decimals round to 3.142. Ppeople who don&#39;t 
need to be more accurate that the thousandths place can use 
22/7.  But machinists have to be more accurate than that, so 
they can&#39;t use 22/7 for &lt;font face=&quot;symbol&quot;&gt;p&lt;/font&gt;.

Edwin&lt;/pre&gt;</PRE>