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CGP EDU Academic Team
Published on: August 13, 2026
Digit at the unit place of the sum of (1!) 2 + (2!) 2 + (3!) 2 ......... + (2008!) 2 is
Text Solution
Verified by ExpertsThe correct answer is:
B
7
Given the sum S = (1!) 2 + (2!) 2 + (3!) 2 +.......+ (2008!) 2
Since the digit at units place is zero in n! for n 
5
Hence, S = (1) 2 + (2) 2 + (6) 2 + (24) + numbers having zero at units place
= 617+ all other numbers having zero at units place
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