HI
birsencal,
The Solution provided by Bunuel is by far the best and easiest to understand. I will just add few more points to what's already done make it clearer.
\(15!=1*2*3*...12*13*14*15\), so
\(n=1*2*3*...12*13*14*15+13\). Factor out 13:
\(n=13*(1*2*3*...12*14*15+1)\), hence
\(n=13*(Positive \ integer \ N)\), meaning
\(n= Multiple \ of \ 13\)
Means 13 can be a divisor of n
Scan the choices and to Pick C
Hope this helps!
birsencal wrote:
I think this is a high-quality question and the explanation isn't clear enough, please elaborate. please elaborate. This solution is unclear to me. Thanks in advance!!!
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