Series — Study Plan
BITSAT · Logical Reasoning
Step-by-step Series study plan for BITSAT Logical Reasoning 2026 — structured month-wise approach to mastering this chapter.
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How to Study Series
A structured approach to studying Series for BITSAT Logical Reasoning.
Study Plan for Series
Day 1–2: Learn the Theory
Study the chapter thoroughly. Note down definitions, formulas, and key concepts.
Day 3: Practice Problems
Solve practice questions and previous year BITSAT problems. Focus on MCQs and numerical problems.
Day 4: Revise & Test
Revise key formulas and concepts without looking at notes. Take a practice quiz to test your understanding.
What to Focus On
- Six major types: Number, Alphabet, Alpha-Numeric, Mixed, Letter, Correspondence.
- Type identification is the first and most time-saving step in BITSAT conditions.
- Letter positions: A=1, B=2, C=3, …, Z=26. Reverse positions: A=26, Z=1 are also used.
- Always compute first-order differences first — the most common pattern in BITSAT.
- If first differences are non-constant but regular, compute second-order differences.
- Ratio check (GP) when terms grow very rapidly.
- Assign positions A=1 through Z=26 immediately for any alphabet series.
- Check positional differences for constant step, increasing step, or decreasing step.
- For group series, analyse first-letters and last-letters independently.
Common Mistakes to Avoid
Every number series must follow a single, uniform arithmetic or geometric rule throughout.
In a 'find the wrong term' question, the term that looks most unusual numerically is the wrong one.
Alphabet series questions only involve moving forward (A→B→C) in the alphabet — reverse movement is rare or a trick.
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