Total Int. ordered pairs in factorial equation.

\hspace{-16}\bf{(1)\;\;}$ Total Integer ordered pair,s of $\bf{(x,y)}$ in $\bf{x^2-y! = 2001}$\\\\\\ $\bf{(2)\;\;}$ Total Integer ordered pair,s of $\bf{(x,y)}$ in $\bf{x^2-7y! = 2011}$\\\\\\ $\bf{(3)\;\;}$ Total Integer ordered pair,s of $\bf{(x,y)}$ in $\bf{x^2-y! = 2013}$\\\\\\

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