Civil Services Prepby Garima Malik & Nitin Sangwan Account

UPSC · Prelims and Mains

CSAT: Comprehension, Reasoning and Numeracy

← Patterns, codes and mental ability

Series and classification

Whole chapter · 8–13 focused hours

Patterns, codes and mental ability

School arithmetic and working reading fluency, with rusty Class X mathematics; first focused CSAT preparation. Learners needing basic literacy or foundational numeracy remediation need a separate diagnostic budget.

Includes

  • Assigned explanatory sections and selected worked examples
  • Available mapped CSAT questions with untimed then timed attempts
  • Mistake analysis and one initial recall review

Separate time needed

  • Full-length timed papers
  • Later spaced revision
  • All optional textbook exercises
  • Advanced mathematics beyond Class X or competition-specific high-difficulty extensions
  • Optional supplementary exam-book exercises beyond available mapped practice

Editorial planning estimate; not learner timing data

Where to study this topic
  • Sequences ↗

    Arithmetic Sequences definition and worked rule; Many Rules warning about finite-prefix ambiguity

  • Sequences ↗

    Geometric Sequences: multiplying by a constant and the powers-of-2 example; Many Rules warning

  • Alternating number series: worked example ↗

    Question 9 and Explanation before Discussion: separate constant odd-position terms from the even-position progression; omit comments

  • Analogy: introduction ↗

    Definition of analogy and Example 5 only: apply the same numerical transformation to the second pair; other examples excluded

  • Classification: worked examples ↗

    Directions and Question 3 with explanation only: distinguish the bird that flies from the three flightless birds

  • Powerful Finale ↗

    Problem and Student Solutions: repeating four-term unit-digit pattern and locating a term by its cycle position

  • Series Completion: repeated letter blocks ↗

    Section 5, Directions and Questions 1–2 with explanations: fill gaps consistently with a repeating letter block

  • Sequences ↗

    Many Rules: a finite prefix alone does not logically force a unique continuation

Whole chapter reading