Mental Ability
Key facts
- Mental ability questions reward method: encode the rule, draw the relation, track movement, or tabulate constraints.
- Coding-decoding needs the smallest letter operation that explains every given pair before applying it to a new word.
- Blood-relation chains become reliable when each person is placed once in a family tree with gender and generation marked.
- Direction and distance puzzles combine compass turns with Pythagorean distance when the final position is diagonal.
- Clock, calendar, ranking, cube and Venn items are numerical reasoning patterns, not memory-only facts.
Key Points at a Glance
- 1
Mental ability questions reward method: encode the rule, draw the relation, track movement, or tabulate constraints.
- 2
Coding-decoding needs the smallest letter operation that explains every given pair before applying it to a new word.
- 3
Blood-relation chains become reliable when each person is placed once in a family tree with gender and generation marked.
- 4
Direction and distance puzzles combine compass turns with Pythagorean distance when the final position is diagonal.
- 5
Clock, calendar, ranking, cube and Venn items are numerical reasoning patterns, not memory-only facts.
- 6
Visual reasoning covers dice, mirror, paper folding, embedded figures and matrices through orientation and symmetry.
Continue studying
How do you solve coding-decoding and alphabet-movement questions?
Coding-decoding and alphabet-movement questions are solved by first identifying the exact operation applied to every letter, position, number or symbol, and then applying that same operation without exception.
Code Families
| Code family | What to check |
|---|---|
| Direct shift | CAT with +3 becomes FDW because C moves to F, A moves to D and T moves to W. |
| Rearrangement code | The letters may be sorted, reversed, alternated or stripped of vowels before ordering. |
| Position-based rules | If the movement differs across letters, check rules such as first letter +1, second letter +2, or alternate reversal. |
| PROJECT to CEOPRT | The visible action is not a shift but a reordering after dropping one repeated or rule-excluded letter; with a simple shift, every old-new letter pair would show the same distance. |
| Number coding | If A equals 1 and Z equals 26, a word may be represented by sums, products, differences, square values or paired positions such as first plus last. |
| Symbol coding | Symbol coding can replace letters with shapes, but the answer still depends on one repeated operation. |
Solving Discipline
- A recent exam paper placed a coding item close to other mental-ability questions, so the topic is active rather than decorative.
- Rajasthan label can be used without changing the rule: if JAIPUR is coded by moving each letter two places forward, the same +2 operation must explain every letter before it is applied to KOTA.
- Safest solve begins with a small table of original letters, coded letters and movement count.
- Coding-decoding is not vocabulary; it is rule consistency under pressure.
- Complete coding solution records the evidence pair before the answer pair.
- First question is always the code family: shift, reverse, sort, vowel-consonant split, position swap or mixed operation.
- Once that family is fixed, apply it mechanically to the new word.
- Common error prevented is forcing a familiar +1 or +2 movement on a problem that is really an arrangement code.
Open the complete note
This public page shows the first available section. The study pack opens the complete topic with all revision material.
9 more sections in the complete note
Open study pack