Question 570854
<pre>
Sample space: 

{H&0, H&1, H&2, H&3, H&4, H&5, H&6, H&7, H&8, H&9, 
 T&0, T&1, T&2, <font color="red">T&3</font>, T&4, T&5, T&6, T&7, T&8, T&9} 

That's 1 way out of 20 or a probability of {{{1/20}}}

Edwin</pre>