General
Maths Puzzle
Logical Reasoning
Find remainder when 1! + 2! + 3! + 4! + 5! +………….+ 100! is divided by 6?
Read Solution (Total 3)
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- Remainder will be 0
- 8 years agoHelpfull: Yes(0) No(0)
- Every factorial beyond 3 is a muktiple of 6. So only two terms 1st and 2nd are left.
Adding these two 1+2=3 is the answer - 8 years agoHelpfull: Yes(0) No(0)
- (1!)mod6=1
(2!)mod6=2
(3!)mod6=0
till 100
ans=3 - 8 years agoHelpfull: Yes(0) No(0)
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