alleryThe list minus 2, 2, minus 2, 2 is not a progression because the differences are:
ANot whole
BNot signed
CNot shown
DNot the same
Answer & Solution
Correct answer: D. Not the same
1. The first gap is 4 and the next is minus 4.
2. A progression needs one fixed gap.
3. The differences are not the same.
_Source: syllabus Mathematics, Chapter 5, Arithmetic Progressions._
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