Question 1116644
.
<pre>
{{{6!/(3!*2!)}}} = {{{720/(6*2)}}} = 60.
</pre>

See the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF =https://www.algebra.com/algebra/homework/Permutations/Arranging-elements-of-sets-containing-undistinguishable-elements.lesson>Arranging elements of sets containing indistinguishable elements</A> 

in this site.