When the common difference is zero, as in 2, 2, 2, 2, the list is:
ANever a progression
BA pure fraction
CA prime series
DStill a progression
Answer & Solution
Correct answer: D. Still a progression
1. The fixed number added is zero.
2. The difference may be positive, negative or zero.
3. It is still an arithmetic progression.
_Source: syllabus Mathematics, Chapter 5, Arithmetic Progressions._
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