Algebra-1

Question Analysis
This question is about identifying a non-arithmetic sequence with a decreasing trend but varying differences. The main focus is on detecting that the differences between consecutive terms are not constant.

Key Concept Explanation
A sequence is not arithmetic if the differences between consecutive terms are not the same. A decreasing trend alone does not make a sequence arithmetic.

Step-by-Step Solution
Calculate the differences between consecutive terms:

Click "Show Answer" to reveal the answer and analysis