Find all possible quadruplets (a,b,c,d) of positive integers, that satisfy this equation:
a!-b!-c! = d2.
Prove that no further quadruplet satisfies the given conditions.
(In reply to
Mask by Hedda Dunn)
As I've said earlier.
Exercise minimal norm of decency.
Do not post such irrelevant and idiotic comments in a Math/Logic website.