Units place

digit in units place of the number 1!+2!+3!+...........+99! is?

2 Answers

106
Asish Mahapatra ·

see for all terms after 5! the units place is zero.
Hence just add the units place of 1!+2!+3!+4! = 3

1
kunalb Bhattacharya ·

i agree absolutely with asish.....

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