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Per NCERT, what defines the COMMON DIFFERENCE in an AP?
AThe difference between the first and last term
BThe difference between any two consecutive terms (constant throughout)
CThe ratio of consecutive terms
DThe product of consecutive terms
Answer & Solution
Correct answer: B. The difference between any two consecutive terms (constant throughout)
Per NCERT §8.4, common difference = (n+1)th term − nth term, which is constant for an AP.
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