The digit at the unit place of (1!)2+(2!)2+(3!)2+(4!)2......(2015!)2

1.	The digit at the unit place of (1!)2+(2!)2+(3!)2+(4!)2......(2015!)2
Answer» The digit at the unit place of $(1!)^{2} + (2!)^{2} + (3!)^{2} + (4!)^{2} . . . . . . (2015!)^{2}$

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The digit at the unit place of (1!)2+(2!)2+(3!)2+(4!)2......(2015!)2

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