Key facts

  • The current CET Senior Secondary s09 block joins reasoning with basic mathematics, so preparation must cover relation, sequence, time, arithmetic, men...
  • Blood relation questions are solved by fixing gender, generation and direction of relation before naming the final link.
  • Number series and alphabet series require rule spotting: difference, ratio, alternating pattern, square/cube pattern, letter position, skipped letters...
  • Clock and calendar questions use cyclic counting; convert movement into minutes, hours, odd days or weekday shifts instead of guessing from memory.
  • Arithmetic coverage includes LCM, HCF, average, profit and loss, percentage, simple interest, compound interest, ratio and proportion.

Key Points at a Glance

  1. 1

    The current CET Senior Secondary s09 block joins reasoning with basic mathematics, so preparation must cover relation, sequence, time, arithmetic, mensuration, data and analytical questions together.

  2. 2

    Blood relation questions are solved by fixing gender, generation and direction of relation before naming the final link.

  3. 3

    Number series and alphabet series require rule spotting: difference, ratio, alternating pattern, square/cube pattern, letter position, skipped letters or paired movement.

  4. 4

    Clock and calendar questions use cyclic counting; convert movement into minutes, hours, odd days or weekday shifts instead of guessing from memory.

  5. 5

    Arithmetic coverage includes LCM, HCF, average, profit and loss, percentage, simple interest, compound interest, ratio and proportion.

  6. 6

    Time-speed-distance and work-time questions become easier when distance or total work is kept fixed and rates are compared clearly.

  7. 7

    Mensuration questions should separate area from volume: triangle, circle, ellipse, rectangle, sphere and cylinder for area; sphere, cylinder, cube and cone for volume.

  8. 8

    Graphs, bar charts, pie charts and line graphs test correct reading of data before calculation; most errors come from using the wrong base or wrong unit.

  9. 9

    Code-decode and sitting arrangement questions need an explicit legend, position map or table; do not keep every condition only in memory.

  10. 10

    Mental ability and analytical ability improve through classification, compact working notes, option elimination and a final check against every condition.

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Current Scope and First Solving Method

The current CET Senior Secondary Logical Reasoning and Mathematics block is not an advanced algebra chapter. It is a practical scoring area built around common reasoning, everyday arithmetic, mensuration and data interpretation. The live scope includes blood relation, number series, alphabet series, clock, calendar, LCM and HCF, average, profit and loss, percentage, simple interest, compound interest, ratio and proportion, time-speed-distance, work-time, area, volume, charts, code-decode, sitting arrangement, mental ability and analytical ability. A candidate should therefore prepare this as a mixed problem-solving unit, not as isolated formulas.

The first step in any question is classification. Ask what the question is really testing: relation, sequence, time, arithmetic, measurement, data, coding, arrangement or general analysis. Once the type is clear, choose the smallest working structure. A blood relation question needs a family line. A series question needs positions and differences. A calendar question needs odd days. A profit question needs cost price or selling price as base. A chart question needs the exact row, column, sector or point.

The second step is to mark the asked value. Many wrong answers come from solving a nearby value: total instead of average, larger angle instead of smaller angle, percentage of the wrong base, person to the left instead of person to the right, or area instead of volume. Write the asked value in one short phrase before calculating.

The third step is option elimination. In objective papers, not every question needs full expansion. A value that must increase cannot have a smaller option. A weekday that should move by 2 odd days cannot remain the same. A seating answer that violates one fixed condition is out. Use elimination early, but verify the final answer against all conditions.

This whole section rewards clean habits. Read the condition, classify the type, write a compact note, calculate only what is needed, and check the answer type before marking.

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PredictedPredicted Questions

Use these prompts to test answer structure before moving to practice.

15MThis content is not available yet.5 marks · 50 words

Model Answer

A is C’s aunt.

~50 words · 5 marks