Find the unit digit in the expression :(1!)^(1!) + (2!)^(2!) + (3!)^(3 – InterviewSolution

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1.	Find the unit digit in the expression :(1!)^(1!) + (2!)^(2!) + (3!)^(3!) + ......................... +(100!)^(100!)
Answer» (a)7 (b)4 (c)6 (d)8 Answer :a

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