Question 1176254
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<pre>

There are 8 prime numbers in the interval from 1 to 20 inclusive

    2 3 5 7 11 13 17 19


Therefore, the answer to the problem's question is  


      P = {{{(8/20)*(7/19)}}} = {{{(2/5)*(7/19)}}} = {{{14/95}}} = 0.1434 = 14.34%.     <U>ANSWER</U>
</pre>

Solved, answered an explained.


The formula I used for the probability is SELF-EXPLANATORY.