Question

What is the unit digit of 1! + 2! + 3! + ........+1000!

Answer 1

Answer:

unit digit is 3....ok.....

Answer 2

Answer:

3

Step-by-step explanation:

1!=1

2!=2

3!=6

4!=24

5!=120

Atfer 4! the unit digit is 0

So our question remains for-unit digit of 1!+2!+3!+4!

1+2+6+4=13

Therefore,3 is the unit digit