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Reasoning question from Social Forest Worker exam, 2026 by JKSSB

Which of the following terms replaces the '?' in the given series 121, 130, 148, ?, 256 

Last updated Jul 21, 2026
Correct Answer: Option A — 184
Step-by-Step Breakdown
First transition: The difference between 121 and 130 is 9.

Second transition: The difference between 130 and 148 is 18 (which is double the previous difference of 9).

Third transition: Doubling the difference again gives 36. Adding 36 to 148 gives 184.

Fourth transition: Doubling the difference once more gives 72. Adding 72 to 184 gives 256, which confirms the pattern is correct.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.
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JKSSB Social Forest Worker 2026

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Exam JKSSB
Recruitment Social Forest Worker
Year 2026
Subject Reasoning
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