Key facts

  • RSSB CET Senior Secondary 2026 places Number series, Alphabet series, Clock, Calendar, Code and decode, Sitting arrangement, and Mental/Analytical abi...
  • Calendar odd days: divide extra days by 7; the remainder is the odd-day count used to shift the weekday.
  • Ordinary year: 365 days = 52 weeks + 1 day; leap year: 366 days = 52 weeks + 2 days; century years are leap years only when divisible by 400.
  • Clock angle formula: angle between hands = |30H - 5.5M| degrees; use the smaller angle unless the question asks otherwise.
  • Clock hands coincide 11 times in 12 hours and 22 times in 24 hours; the interval is 65 5/11 minutes.

Key Points at a Glance

  1. 1

    RSSB CET Senior Secondary 2026 places Number series, Alphabet series, Clock, Calendar, Code and decode, Sitting arrangement, and Mental/Analytical ability under Logical Reasoning and Mathematics.

  2. 2

    Calendar odd days: divide extra days by 7; the remainder is the odd-day count used to shift the weekday.

  3. 3

    Ordinary year: 365 days = 52 weeks + 1 day; leap year: 366 days = 52 weeks + 2 days; century years are leap years only when divisible by 400.

  4. 4

    Clock angle formula: angle between hands = |30H - 5.5M| degrees; use the smaller angle unless the question asks otherwise.

  5. 5

    Clock hands coincide 11 times in 12 hours and 22 times in 24 hours; the interval is 65 5/11 minutes.

  6. 6

    Alphabet series questions test forward/backward movement, skipped letters, reverse alphabet positions, alternate terms and mixed letter-number patterns.

  7. 7

    Code-decode questions require the same rule to fit all examples before applying it to the asked word, number, symbol or relation.

  8. 8

    Sitting arrangement questions should be solved by fixing direction, drawing seats, placing definite clues first, and testing remaining conditions.

  9. 9

    Number series method: test differences, second differences, multiplication/division, squares, cubes, primes, alternating patterns and mixed operations before choosing the missing or wrong term.

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Syllabus scope and role in CET

The current official RSSB CET Senior Secondary 2026 syllabus places this topic under Logical Reasoning and Mathematics. The exact in-scope bullets used here are: 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, and time; mensuration topics; graphical representation of data; Code and decode; Sitting arrangement; and Mental ability and analytical ability. This file covers the reasoning side named in its identity: calendar, clock, alphabet series, code-decode, sitting arrangement, number series, and the practical mental-analysis habits needed to solve them. It does not teach Graduation-level-only India history, social reform, RBI monetary policy, or India-wide crop/mineral economy items.

The practical approach is to classify the question first. If the question asks about dates, weekdays, months or leap years, use calendar rules. If it asks about hour and minute hands, angle, meeting, opposite position, mirror image, gain or loss, use clock rules. If letters move in a sequence, treat it as an alphabet series. If letters, numbers, words or symbols are replaced by a hidden rule, treat it as code-decode. If persons or objects are placed in a row, circle, facing-direction or floor/order setup, treat it as sitting arrangement. If terms are numerical, test the number-series families in a fixed order.

Exam focus: these topics reward a repeatable method more than memorised lists. Write the rule, apply it consistently, and check whether the answer fits every given example or clue.

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