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Reasoning question from Social Forest Worker exam, 2026 by JKSSB

Find the next term in the given series :
8, 7, 12, 33, 128_? 

Last updated Jul 21, 2026
Correct Answer: Option D — 635
o find the next term, look at the pattern connecting each number:

Start with 8: 8 multiplied by 1, minus 1, gives 7

From 7 to 12: 7 multiplied by 2, minus 2, gives 12

From 12 to 33: 12 multiplied by 3, minus 3, gives 33

From 33 to 128: 33 multiplied by 4, minus 4, gives 128

Notice that at each step, both the multiplier and the number subtracted increase by 1.

To find the missing term:

Take 128, multiply by 5, and subtract 5

128 multiplied by 5 is 640

640 minus 5 gives 635

Therefore, the correct choice is D) 635.
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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