<PRE><B>Question 830254</B>
Not quite subtract as you have done, because it is the factors at the big end that are left.
Write 14! as 14·13·12·11! and 10! as 10·9!:
10·9!·11!
----------------------------
9!·14·13·12·11!

You can cancel and get:
10
-------------
14·13·12

= 5/1092</PRE>