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What is the unit digit of 1! + 2! + 3! + ……+ 99! + 100!?
3
1
5
6
Unit digit of 1! +2! + 3! + 4! + 5! + 6! ………… = 1 + 2 + 6 + 24 + 120 + 0 ……… = 3 Note: We know that unit digit of 5! and for all the numbers greater than 5! = 0.
By: Amit Kumar ProfileResourcesReport error
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