Coding, Decoding & SeriesLetter shifts, reversals and mixed-rule series — 24 items that reward whoever finds the rule first.
Coding, Decoding & Series measures symbolic manipulation through 24 items in 20 minutes: letter-shift ciphers, reversal codes, alphabet-position number codes and letter and number series spanning arithmetic, geometric, prime, factorial and mixed-rule progressions. Three banded competencies and every rule explained.
In brief
Coding, Decoding & Series is an online assessment in AssessAll's Aptitude Catalogue line taking about 20 minutes. It measures logical reasoning, abstract & pattern reasoning and cognitive speed & agility. It is built for graduates preparing for bank, public-sector and IT-services reasoning sections. Scoring is evidence-keyed, and the full report is available immediately after submission, priced in INR and USD.
| Format | Online, one sitting |
|---|---|
| Duration | About 20 minutes |
| What it measures | Logical Reasoning, Abstract & Pattern Reasoning, Cognitive Speed & Agility |
| Built for | Graduates preparing for bank, public-sector and IT-services reasoning sections; Applicants to process, operations and support roles screened for rule-based trainability; High-volume graduate recruiters who need a fast, unambiguous reasoning screen |
| Scoring | Evidence-keyed |
| Report | Available immediately after submission |
| Currencies | INR and USD |
Machine-generated ciphers, so every answer is exactly derivable
One word is shown in code and you must encode another by the same rule — a constant letter shift, a shift that grows with position, a reversal, a swap of pairs. A number code assigns each letter its alphabet position and asks for a three-letter word's value. A series advances by differences that themselves grow, or alternates between two rules, or runs through primes or factorials in disguise. Twenty-four items in 20 minutes: the candidate who spots the rule on the second letter finishes with time to spare; the one who tests each option letter by letter does not.
The cipher items and their keys are machine-generated and machine-verified, which means there is exactly one rule consistent with the example and exactly one correct encoding — never a disputed key or an ambiguous shift. The series items follow the international coding-decoding and series conventions used in graduate volume screening and each key is checked against its stated rule. Distractors are the outputs of near-miss rules: shifting the wrong way, applying the rule to the example rather than the target, extending a series by the last difference instead of the growing one.
The report scores three competencies — Logical Reasoning, Abstract & Pattern Reasoning and Cognitive Speed & Agility — because this test is above all a screen for trainability in rule-based work, and speed of rule extraction is part of the signal. Each is banded with a coaching interpretation, and the AI-written narrative says whether your misses came from wrong rules or from running out of time. The question-by-question review states the rule for every item, and the growth plan names the cipher and series families to drill.
What you walk away with
Logical Reasoning, Abstract & Pattern Reasoning and Cognitive Speed & Agility are banded separately on a radar and as bars. Together they show how quickly you extract and apply an unfamiliar rule — the quality rule-based roles are actually hiring for.
The review states the exact rule for each cipher and series — shift of plus three, reversal then shift, differences increasing by one — beside your answer and the key. A wrong encoding becomes a named rule family you will recognise next time.
The narrative distinguishes items you got wrong from items you never reached, so you know whether to practise rule-spotting or pacing. Two candidates with the same total can need opposite preparation, and the report tells each which.
Built from your lowest competency, the plan lists which cipher types and series progressions to drill and how to test a candidate rule on the second letter rather than the whole word — the tactic that turns 20 minutes into enough time.
Inside your report
Illustrative sample — your report is generated from your own responses.
Band edges at 40, 60 and 80. Each band carries its own coaching interpretation for that competency.
Every competency this test declares, scored from the items tagged to it — so the shape is yours, not a template.
Assembled from your lowest competencies, in order — not a generic checklist.
Built for
- Graduates preparing for bank, public-sector and IT-services reasoning sections
- Applicants to process, operations and support roles screened for rule-based trainability
- High-volume graduate recruiters who need a fast, unambiguous reasoning screen
- Anyone who wants to know whether they spot rules quickly or grind through options
Rule-based roles hire the person who finds the rule before the clock does.
Twenty-four ciphers and series in 20 minutes, with the exact rule stated for every item.
Take free · full report ₹150 (incl. GST)
Frequently asked questions
Symbolic manipulation: encoding and decoding words under letter-shift, reversal and position-based rules, converting letters to alphabet-position numbers, and completing letter and number series that follow arithmetic, geometric, prime, factorial and mixed-rule progressions. Twenty-four items in 20 minutes make it a high-signal screen for trainability in rule-based work. It suits graduates facing bank, public-sector and IT-services reasoning sections and the recruiters who run them.
No. Cipher items and their keys are machine-generated and machine-verified, so exactly one rule fits the example and exactly one encoding is correct. Series keys are checked against their stated rule. Distractors are near-miss rules — the wrong shift direction, the last difference reused — so guessing gives no edge. Answers roll into three banded competencies and an overall 0–100 score. The bands describe where you stand, not a cut-off.
Twenty minutes for 24 items in one sitting on any device. The report is generated immediately: overall banded score, a radar and banded bars for Logical Reasoning, Abstract & Pattern Reasoning and Cognitive Speed & Agility with coaching interpretations, an AI-written narrative separating wrong answers from unreached items, strengths and development areas, a prioritised growth plan and a question-by-question review stating every rule. Nothing further to unlock.
Candidates should learn the rule family behind each miss, practise testing a candidate rule on the second letter rather than the whole word, and retake to see the speed band move. Recruiters use the three bands as a fast, unambiguous first screen for process, operations and support roles, and use the narrative to distinguish a slow-but-accurate candidate from a fast-but-careless one. The report is yours to keep and share.
Yes. Ciphers and series use the Latin alphabet and plain numbers with no language, currency or local content, and the formats match graduate volume-screening conventions used internationally. Bands describe performance rather than rank against a national group. The test is priced in INR and USD; the live price for your currency appears on this page.
Numerical, verbal, logical, abstract, spatial, data and workplace-judgment banks — each an original item bank with every rule stated in the explanation, scored per competency and reported with a banded profile and a growth plan. Sit one, or build a battery from several.
See the aptitude catalogue →Methodology: Original AssessAll item bank; cipher items are machine-generated with machine-verified keys. Follows international coding-decoding and series conventions used in graduate volume screening. Not affiliated with any third-party instrument.
Beyond the assessment · Measure. Plan. Learn. Coach. Prove it.
What should you do after taking the Coding, Decoding & Series?
Use the report as a baseline, not a verdict. Turn it into an individual development plan on Jobulary, with three objectives for the next 90 days; practise the gaps with the Critical Thinking & Decision Making Kit for the AI Era on Bodhih.org; and, for a team, run the Critical Thinking Training for Employees with Bodhih Training. Then take the Coding, Decoding & Series again to see what moved.
- Step 1 · Plan · Jobulary
Turn your report into a development plan
Three outcome objectives for a 90, 180 or 365-day cycle, a 70/20/10 path, and a re-measure that counts growth only when it is larger than measurement error. The plan stays yours when the job changes. Free to start.
Start a plan on Jobulary - Step 2 · Learn · Bodhih.org
Practise what the report flags
- Pro KitCritical Thinking & Decision Making Kit for the AI EraCritical thinking kit for work: e-book, decision matrix, pre-mortem, AI verification checklist and bias cheat sheets. Decide better from today.
- Trainer ToolkitCritical Thinking Trainer Toolkit
- Trainer ToolkitProblem Solving Trainer Toolkit
Pro Kits, business simulations, online courses and trainer toolkits, priced in INR and USD.
- Step 3 · Train · Bodhih Training
Train the whole team
- Classroom programmeCritical Thinking Training for EmployeesCritical thinking training for employees and managers: question assumptions, weigh evidence and make sound decisions. Customised by Bodhih. Enquire…
- Classroom programmeProblem Solving and Decision Making Skills
- Classroom programmeSystems Thinking Training for Leaders
Customised, instructor-led programmes, in person or live online. Since 2008: 2,000+ companies and 18,000+ programmes.
AssessAll, Jobulary, Bodhih.org and Bodhih Training are Bodhih companies. Use one, or close the loop: measure here, plan, learn, then sit the Coding, Decoding & Series again to see what changed.
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