IBPS SO IT Officer · Quantitative Aptitude
Number Series
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1. The Pulse Check (Difference)
Gap Analysis
Primes
Fibonacci
Always check the "pulse" (gap between numbers) first. Watch for "Alternate Primes" where the series skips every other prime number (e.g., 3, 7, 13, 19).
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2. The Sudden Jump
Multiplication
× n ± k
Fractional
× 0.5, × 1
Division
÷ n
Multi-Layer
Diff of Diff
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3. Shape-Shifter Logic
Square Patterns
$$ n^2 \pm n $$
Cube Patterns
$$ n^3 \pm n $$
🌟 Topper's Mindset
1
The 10-Second Rule: If no pattern clicks in 10s, skip and mark for review.
2
Zig-Zag Illusion: Long series (7+ terms) are usually two shuffled series.
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Quantitative Aptitude