2024 AMC 8 Problems/Problem 1
Problem
What is the ones digit of
Solution 1
So the solution is
~nikhil ~ CXP
Solution 2
We can rewrite the expression as .
We note that the units digit of the addition is because all the units digits of the five numbers are
and
, which has a units digit of
.
Now, we have something with a units digit of subtracted from
. The units digit of this expression is obviously
, and we get
as our answer.
~ Dreamer1297