Solve the following equations positive integers: (i) a!+b!+c!=d! (ii) a!+b!=25*c! (iii)a!=b^2 For the first two one , i have no idea how to begin . But the third one I may use Bertrand's Postulate some where. Could anyone give me some ideas??
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Originally Posted by Sonifa (i) a!+b!+c!=d! Hi Sonifa! Let's pick . Then we have . Therefore . Now enumerate all possibilities taking this bound into account...
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