1988 AMC 8 Problem 19
Attempt Problem 19 of the 1988 AMC 8 below, then check your answer against the professionally curated solution from LIVE by Po-Shen Loh. You can also try the full timed exam, view all 1988 AMC 8 solutions, or check the answer key.
All problems are used with official legal permission of the Mathematical Association of America (MAA).
19.
What is the th number in the arithmetic sequence
Answer: A
Small hint:
The common difference is so each term adds to the previous one
Big hint:
Starting from reaching the th term means adding a total of times
Solution:
The sequence starts at with common difference The th term is reached by adding to the first term times.
So the th term is
Thus, the correct answer is A .
Problem 19 in other years
- 1985 AMC 8
- 1986 AMC 8
- 1987 AMC 8
- 1989 AMC 8
- 1990 AMC 8
- 1991 AMC 8
- 1992 AMC 8
- 1993 AMC 8
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