Algebra-1

Question Analysis
This question involves identifying a non-arithmetic sequence with a repeating pair pattern but varying differences. The main focus is on recognizing that the differences between consecutive terms are not constant.

Key Concept Explanation
A sequence with a repeating pattern of terms is not necessarily arithmetic. For it to be arithmetic, the difference between every pair of consecutive terms must be the same.

Step-by-Step Solution
Calculate the differences between consecutive terms:
5 - 5 = 0
7 - 5 = 2
7 - 7 = 0
9 - 7 = 2
The differences are 0, 2, 0, 2, which are not constant. Therefore, the sequence is not arithmetic.

Common Mistak...