What is the units digit of 18!
What is the units digit of 18! + 1 ?
Answer/Solution
1
Steps/Work
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! + 1 is 1.
The answer is A.
The units digit of 18! + 1 is 1.
The answer is A.