What is the remainder when 1! + 2! + 3! + … + 100! is divided by 12?
A. 3
B. 9
C. 5
D. 0
A. 3
B. 9
C. 5
D. 0
Best answer
Answer: B. 9
Answer: (B) 9
From 4! onwards every factorial is divisible by 12 (4! = 24).
So the remainder comes from 1! + 2! + 3! = 1 + 2 + 6 = 9.
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