find the remainder left after dividing 1! + 2! + 3! +...1000! by 7.

Question

Answer 1

after 7!(including 7!) all numbers will be divisible by 7
so, we have to calculate the remainder when 1!+2!....+6! is divided by 7
which means 873/7..therefore remainder is 5

Answer 2

after 7!(including 7!) all numbers will be divisible by 7
so, we have to calculate the remainder when 1!+2!....+6! is divided by 7
which means 873/7..therefore remainder is 5

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find the remainder left after dividing 1! + 2! + 3! +...1000! by 7.