Which of the following is a sequence with COMMON DIFFERENCE 4?
A1, 4, 9, 16, …
B3, 7, 11, 15, …
C2, 4, 8, 16, …
D5, 9, 11, 15, …
Answer & Solution
Correct answer: B. 3, 7, 11, 15, …
Common difference = each term − previous term. For 3, 7, 11, 15, …: differences are 4, 4, 4, … — constant. This is an arithmetic sequence (progression) with first term 3 and common difference 4.
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