2024 AMC 8 Problems/Problem 1
Contents
Problem
What is the ones digit of
Solution 1
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
Solution 2
This means the ones digit is ~ nikhil ~ CXP
Solution 3
We only care about the unit's digits.
Thus, ends in , ends in , ends in , ends in , and ends in ,
~MrThinker
Video Solution 1 (easy to digest) by Power Solve
https://www.youtube.com/watch?v=HE7JjZQ6xCk
See Also
2024 AMC 8 (Problems • Answer Key • Resources) | ||
Preceded by First Problem |
Followed by Problem 2 | |
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All AJHSME/AMC 8 Problems and Solutions |
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