2025 AMC 8 Problem 4
Attempt Problem 4 of the 2025 AMC 8 below, then check your answer against the video solution and professionally curated solution from LIVE by Po-Shen Loh. You can also try the full timed exam, view all 2025 AMC 8 solutions, or check the answer key.
All problems are used with official legal permission of the Mathematical Association of America (MAA).
4.
Lucius is counting backward by s. His first three numbers are and What is his th number?
Answer: B
Small hint:
The th number is steps after the st
Big hint:
Subtract nine 7s from the first term
Video solution:
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Written solution:
There will be gaps between his first number and his th number. Each gap has size
So, he will subtract a total of from leaving an answer of which is choice B.
Problem 4 in other years
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