What is the units digit of 18! + 5 ?  Select the correct option: A) 2 B) 3 C) 4 D) 5 E) 6
Any number above 4!, such as 5!, 6!, etc... are always multiples of 10, so their units digit is 0.   The units digit of 18! + 5 is 5.   The answer is 5.
<result>D</result>
What is the units digit of 18! + 5 ?