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Topics Covered

1

Analogy

An analogy shows a relationship between two pairs. Find the same relationship for the second pair.

Types of Analogies

TypeExampleRelationship
Word analogyDoctor : Hospital :: Teacher : ?Person & workplace → School
Number analogy4:16 :: 5:?n:n² → 25
Letter analogyACE:BDF :: ?+1 to each letter
Tool-functionPen:Write :: Scissors:CutObject & its use
Part-wholeLeaf:Tree :: Petal:FlowerPart to whole
Cause-effectFire:Smoke :: Rain:FloodCause → Effect
💡 Strategy
  • State the relationship in words first: "A is made from B" / "A lives in B"
  • Apply the SAME relationship to the second pair
  • For number analogies: check +, −, ×, ÷, power, square, cube
  • Letter analogy: find position difference using alphabet positions (A=1, B=2...Z=26)
2

Classification (Odd One Out)

Find the term that does NOT belong to the same group.

Common Categories to Watch
Alphabetical positions (odd/even, prime, square, multiples)
Sum/difference of digits of numbers
Number of letters in words
Semantic group (tools/vegetables/birds etc.)
Letter pattern (vowels at specific positions)
Spelling (double letters, specific patterns)
💡 Approach
  • First check the obvious category (meaning-based)
  • If all seem similar, check numbers/positions/patterns
  • Eliminate options that clearly belong to the group
  • The odd one is the unique exception
3

Number & Letter Series

Number Series Patterns

Pattern TypeExampleRule
Arithmetic3, 7, 11, 15, ?+4 each time → 19
Geometric2, 6, 18, 54, ?×3 each time → 162
Square series1, 4, 9, 16, 25, ?n² → 36
Cube series1, 8, 27, 64, ?n³ → 125
Prime series2, 3, 5, 7, 11, ?Primes → 13
Mixed ±1, 3, 7, 13, 21, ?Diff: 2,4,6,8,10 → 31
Two-step3, 4, 8, 17, 33, ?×2−2, ×2+1... find pattern
Fibonacci-type1, 1, 2, 3, 5, 8, ?Sum of prev 2 → 13
💡 Series Approach
  1. Find differences (1st order)
  2. If not constant, find 2nd order differences
  3. Check for multiplication/division pattern
  4. Check for squares, cubes, primes
  5. Try alternating series (even/odd positioned terms separate)

Letter Series

Alphabet Position Chart
A=1, B=2, C=3, D=4, E=5, F=6, G=7, H=8, I=9, J=10
K=11, L=12, M=13, N=14, O=15, P=16, Q=17, R=18, S=19, T=20
U=21, V=22, W=23, X=24, Y=25, Z=26

Reverse: A=26, B=25, C=24 ... Z=1 (for EJOTY type questions)
EJOTY: E=5, J=10, O=15, T=20, Y=25 (multiples of 5)
💡 Common Patterns
  • Skipping: A_C_E (skip 1) | A__D__G (skip 2)
  • +n pattern: find position differences between letters
  • Reverse alphabets: ZYX or backward positions
  • Mixed: 1st letter +2, 2nd letter +3, 3rd letter −1
4

Coding-Decoding

Types of Coding

TypeExampleHow to Decode
Letter shiftCAT → DBU (each +1)Find the shift value
Reverse alphabetCAT → XZG (A↔Z, B↔Y...)Use 27−position
Number codeCAT → 3120Position values concatenated
Symbol codeWords coded as symbolsFind common element
Condition codeVowels +2, consonants −1Apply rules separately
💡 Step-by-Step Approach
  1. Write the original word and its code side by side
  2. Check each letter individually: what is it coded as?
  3. Find the pattern (shift value, operation)
  4. Apply the SAME rule to decode/encode the question word
  5. For number codes: write positions and see if they match directly or with operation

Message Coding (Decoded Sentences)

⚠ Key Technique
Given: "sky is blue" = "ko mi la" and "sky is red" = "ko mi ta"
→ Common: "sky is" = "ko mi" | Unique: "blue"="la" and "red"="ta"
Always find the common words/codes across statements to decode each word individually.
5

Blood Relations

Key Relations Chart
Father's/Mother's father → Grandfather
Father's/Mother's mother → Grandmother
Father's brother → Uncle | Father's sister → Aunt
Uncle's/Aunt's son or daughter → Cousin
Husband's/Wife's father → Father-in-law
Son's wife → Daughter-in-law | Daughter's husband → Son-in-law
Brother's son → Nephew | Brother's daughter → Niece
Siblings: Brothers and sisters
💡 Draw Family Tree
Always draw a tree diagram. Use boxes for males (□) and circles for females (○). Connect by lines (| for parent-child, = for spouse). Navigate step by step from the starting person.
Shortcut for Pointing Questions
"He pointed to a photograph and said 'She is the daughter of my mother's only son'"
My mother's only son = Me → My daughter → She is my daughter
6

Direction & Distance

Direction Rules
8 directions: N, NE, E, SE, S, SW, W, NW
Left turn from North → West | Right turn from North → East
U-turn (180°) reverses direction completely

Sun rises in EAST and sets in WEST
Shadow in morning → towards West (sun in east)
Shadow in evening → towards East (sun in west)
Shadow at noon → towards North (India)

Net displacement = √(horizontal² + vertical²) [Pythagoras]
💡 Draw on Paper
Always draw on paper for direction problems. Mark each turn and distance. Final displacement = straight-line distance from start to end using Pythagoras theorem.
⚠ Common Trap
"Facing" vs "walking" — a person can FACE North but WALK South (if they turn around). Always track direction the person is FACING, then move in that direction.
7

Ranking & Arrangement

Key Formulas
Rank from top + Rank from bottom = Total + 1
If rank from top = r, rank from bottom = n−r+1

If A is xth from left and B is yth from right in a row of n persons:
Number of persons between them = n − x − y + 1 (if x+y < n+1)
If x+y > n: they overlap (one person counted twice)

Minimum total in a row: If Arun is 8th from left and 7th from right → n = 8+7−1 = 14
💡 Arrangement Tips
  • Use rank formula: Position from top + from bottom = n + 1
  • For "at least" questions: use minimum scenario
  • For circular arrangement: n persons → (n−1)! arrangements
  • When seats are numbered/fixed, left-right relative to the circle
8

Syllogism

Venn Diagram Method

Draw Venn diagrams for all possible cases and check if each conclusion is true in ALL cases.

Statement Types
All A are B → A is completely inside B
No A is B → A and B are completely separate
Some A are B → A and B partially overlap
Some A are not B → Part of A is outside B

For "Either...or" conclusions: both must be uncertain individually
Complementary pair: "Some A are B" + "No A is B" = Definitely Either/Or
💡 Quick Rules
  • All+All → All (All A=B, All B=C → All A=C)
  • All+No → No (All A=B, No B=C → No A=C)
  • Some+All → Some (Some A=B, All B=C → Some A=C)
  • Some+No → Some not (Some A=B, No B=C → Some A are not C)
  • All/Some + Some → Uncertain (conclusion NOT definite)
  • If conclusion has "ALL", check if every diagram supports it
9

Seating Arrangement & Puzzle

Linear Arrangement

💡 Steps
  1. Identify total number of persons/seats
  2. Mark definite positions first (absolute clues)
  3. Use relative clues to fill remaining positions
  4. Start with the most constrained person/seat
  5. Verify all clues after placing everyone

Circular Arrangement

⚠ Key Rules
  • Fix one person's position (any seat = 0°) to avoid rotating duplicates
  • "Immediate left" in circle = counterclockwise for standard view
  • "Facing the centre" — left of person = right in diagram if facing inward
  • Square/Hexagon arrangements: corner vs non-corner matters

Matrix/Scheduling Puzzle

💡 Use Grid Method
Draw a grid with rows = persons and columns = attributes. Mark Yes/No in each cell based on clues. Use process of elimination.
10

Statement & Conclusions / Arguments

Statement & Conclusions

Rules for Valid Conclusions
A conclusion FOLLOWS if it:
1. Is definitely true based on the statement alone
2. Does NOT require outside knowledge or assumptions
3. Is not a contradiction of the statement
4. Does not go beyond what is stated (no extra inference)

Statement & Assumptions

💡 What is Assumed?
An assumption is something taken for granted in a statement. It's unstated but necessary for the statement to make sense. Ask: "What must be true for this statement/action to make sense?"

Strong vs Weak Arguments

Strong Argument Must:
1. Be directly related to the topic
2. Be important and significant
3. Not be based on assumptions or emotions
4. Apply to the majority, not exceptional cases
Weak argument: Trivial, emotional, ambiguous, or based on exceptional cases
11

Non-Verbal Reasoning

Mirror Image

Mirror Rules
Left-right mirror (vertical mirror): Left ↔ Right (top-bottom unchanged)
Top-bottom mirror (horizontal mirror): Up ↔ Down (left-right unchanged)

For letters/numbers in mirror:
Left-right mirror: b↔d, p↔q, A→A, H→H, I→I, M→M, O→O, T→T, U→U, V→V, W→W, X→X, Y→Y
(Symmetric letters look same in mirror)
💡 Trick
Think of a clock face: mirror image reverses the positions left to right. 12 stays at top, but 3 goes to left and 9 goes to right.

Water Image

Water Image Rules
Water image = upside-down image (top ↔ bottom, left-right unchanged)
Combined mirror+water = rotated 180°
Letters with top-bottom symmetry look same: B, C, D, E, H, I, K, O, X

Paper Folding & Punching

💡 Paper Fold Technique
Unfold mentally in reverse order. Each fold creates a mirror reflection of punch holes. Holes appear symmetrically across the fold line. Count total holes = single hole × 2ⁿ (where n = number of folds through which hole is punched).

Embedded Figures

💡 Approach
Find the simple figure hidden within the complex one. Keep the shape's proportions and orientation in mind. Look for all sides of the simple figure in the complex one simultaneously.

Counting Figures

Counting Formulas
Triangles in n-row triangular figure = n(n+2)(2n+1)/8
Squares in n×n grid = Σk² = 1²+2²+...+n² = n(n+1)(2n+1)/6
Rectangles in m×n grid = mC2 × nC2 = [m(m+1)/2] × [n(n+1)/2]
(where mC2 = number of ways to choose 2 horizontal lines, nC2 = vertical)

Dice Problems

Dice Rules
Standard die: opposite faces sum = 7 (1-6, 2-5, 3-4)
When a die is shown in two positions, the face touching the table differs
Method: Identify the common face in both positions, rotate mentally

Shortcut: If two dice show same top face, the die was rotated around vertical axis — left/right faces change, top/bottom same
12

Clock & Calendar

Clock Problems

Clock Formulas
Hour hand speed: 360°/12hr = 0.5°/min
Minute hand speed: 360°/60min = 6°/min
Relative speed of minute hand over hour hand: 5.5°/min

Angle between hands at H hours M minutes:
θ = |30H − 5.5M|°
If θ > 180°, actual angle = 360° − θ

Time for hands to overlap: every 65.45 min (approx 65 min 27 sec)
Hands at right angle: 44 times in 24 hours
Hands overlap: 22 times in 24 hours
Example
Angle at 3:20 = |30×3 − 5.5×20| = |90 − 110| = 20°

Calendar Problems

Calendar Rules
Ordinary year: 365 days = 52 weeks + 1 odd day
Leap year: 366 days = 52 weeks + 2 odd days
Leap year: Divisible by 4; century year must be divisible by 400
(1900 is NOT a leap year; 2000 IS a leap year)

Day codes: Sun=0, Mon=1, Tue=2, Wed=3, Thu=4, Fri=5, Sat=6
Month codes (non-leap year): Jan=0, Feb=3, Mar=3, Apr=6, May=1, Jun=4, Jul=6, Aug=2, Sep=5, Oct=0, Nov=3, Dec=5

Odd days in a century: 100 years = 5 odd days (76 ordinary + 24 leap)
400 years = 0 odd days (calendar repeats every 400 years)
💡 "What day was..." Formula (Zeller's simplified)
Day = (Date + Month code + Year code) mod 7
Or simply: if Jan 1 is Monday, Jan 8 is also Monday (same day, +7 days)
Add odd days and take modulo 7 to find the weekday.