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If 1!+2!+3!+.........+100! is divided by 8,find the remainder.
If 1!+2!+3!+.........+100! is divided by 8,find the remainder.
1 Answer
Radhika Batra
remainder is 1
as all the factorials greater than 3! are divisible by 8 as all of them has a factor of 4 and 2
so 1! + 2! + 3! = 1 + 2 + 6 = 9
when divided by 8 gives remainder 1
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