Analogy – Full Notes for ADRE & Competitive Examinations

 

1. Introduction

Analogy is an important topic in the Reasoning section of competitive examinations. The word analogy means similarity or correspondence between two relationships.

In an analogy question, the relationship between the first pair is identified and the same relationship is applied to the second pair.

Basic Form

A : B :: C : ?

It means:

A is related to B in the same way that C is related to the missing term.

Example

Doctor : Hospital :: Teacher : ?

A doctor works in a hospital.

A teacher works in a school.

Answer: School




2. Main Types of Analogy

Analogy questions can be broadly classified into:

Word Analogy

Semantic Analogy

Number Analogy

Alphabet Analogy

Letter-Number Analogy

Mixed Analogy

General Knowledge Analogy

Part and Whole Analogy

Worker and Workplace Analogy

Worker and Tool Analogy

Object and Function Analogy

Animal and Young One Analogy

Animal and Sound Analogy

Animal and Home Analogy

Synonym Analogy

Antonym Analogy

Cause and Effect Analogy

Product and Raw Material Analogy

Country and Capital Analogy

Instrument and Measurement Analogy




3. Word Analogy

Word analogy is based on the relationship between two words.

Example

Book : Read :: Food : ?

A book is read.

Food is eaten.

Answer: Eat

Example

Eye : See :: Ear : ?

Eye → Seeing

Ear → Hearing

Answer: Hear




4. Object and Function Analogy

Here, the relationship is between an object and its function.

Object.       Function

Pen    Writing

Knife.  Cutting

Needle   Sewing

Camera   Photography

Clock   Showing time

Thermometer   Measuring temperature

Barometer.   Measuring atmospheric pressure

Telescope.     Observing distant objects

Microscope.     Magnifying objects

Compass      Finding direction

Example

Thermometer : Temperature :: Barometer : ?

Answer: Atmospheric pressure




5. Worker and Workplace Analogy

A profession is related to its usual workplace.

Profession.   Workplace

Teacher.    School

Doctor.     Hospital

Judge     Court

Farmer.    Field

Scientist.   Laboratory

Librarian.    Library

Chef.     Kitchen

Lawyer.     Court

Postman.     Post Office

Sailor.     Ship

Example

Doctor : Hospital :: Teacher : ?

Answer: School





6. Worker and Tool Analogy

Here, a person is related to the tool normally used by that person.

Person.     Tool

Carpenter.    Saw

Tailor.    Needle

Farmer.    Plough

Writer.   Pen

Painter.   Brush

Barber.   Scissors

Mason.    Trowel

Photographer.   Camera

Example

Carpenter : Saw :: Tailor : ?

Answer: Needle





7. Part and Whole Analogy

A part is related to the complete object.

Examples

Finger : Hand :: Toe : Foot

Wheel : Car :: Wing : Aeroplane

Chapter : Book :: Room : House

Petal : Flower :: Leaf : Plant

Example

Keyboard : Computer :: Wheel : ?

Answer: Vehicle





8. Animal and Young One Analogy

Animal.     Young One

Dog.    Puppy

Cat.     Kitten

Cow.   Calf

Goat.     Kid

Sheep.    Lamb

Horse.   Foal

Lion.    Cub

Tiger.    Cub

Deer.     Fawn

Elephant.     Calf

Hen.     Chick

Duck.    Duckling

Frog.    Tadpole

Example

Cow : Calf :: Goat : ?

Answer: Kid





9. Animal and Sound Analogy

Animal.    Sound

Dog.     Bark

Cat.     Meow

Lion.      Roar

Tiger.    Roar

Snake.    Hiss

Horse.      Neigh

Cow.      Moo

Donkey.     Bray

Sheep.     Bleat

Elephant.     Trumpet

Frog.    Croak

Example

Dog : Bark :: Lion : ?

Answer: Roar





10. Animal and Home Analogy

Animal.      Home

Lion.      Den

Rabbit.     Burrow

Bird.     Nest

Bee.     Hive

Horse.     Stable

Dog.      Kennel

Cow.       Shed

Pig.       Sty

Hen.      Coop

Spider.      Web

Example

Bee : Hive :: Horse : ?

Answer: Stable





11. Synonym Analogy

A synonym analogy is based on words having similar meanings.

Examples

Big : Large :: Small : Little

Happy : Joyful :: Sad : Unhappy

Begin : Start :: End : Finish

Brave : Courageous :: Clever : Intelligent

Important Synonym Pairs

Big — Large

Small — Little

Happy — Joyful

Sad — Unhappy

Fast — Quick

Begin — Start

End — Finish

Brave — Courageous

Clever — Intelligent

Silent — Quiet

Rich — Wealthy

Honest — Truthful





12. Antonym Analogy

An antonym analogy is based on opposite meanings.

Examples

Hot : Cold :: Day : Night

Victory : Defeat :: Success : Failure

Rich : Poor :: Strong : Weak

Important Antonym Pairs

Word.      Opposite

Hot.      Cold

Day.      Night

Light.     Dark

High.      Low

Rich.     Poor

Strong.     Weak

Early.      Late

Old.       Young

Hard.      Soft

Success.      Failure

Victory.     Defeat

Buy.      Sell

Give.      Take

Accept.       Reject





13. Cause and Effect Analogy

One word causes or produces the other.

Examples

Fire : Smoke

Fire produces smoke.

Study : Knowledge

Study increases knowledge.

Exercise : Fitness

Exercise contributes to fitness.

Example

Rain : Flood :: Fire : ?

Rain may cause flood.

Fire may cause destruction.

The exact answer depends on the options.






14. Product and Raw Material Analogy

The relationship is between a product and the material from which it is made.

Examples

Cloth : Cotton

Cotton is used to make cloth.

Paper : Wood

Wood is an important raw material for conventional paper production.

Furniture : Wood

Jewellery : Gold

Example

Cloth : Cotton :: Jewellery : ?

Answer: Gold





15. Country and Capital Analogy

These questions use general knowledge.

Examples

India : New Delhi :: Bangladesh : ?

Answer: Dhaka

Japan : Tokyo :: France : ?

Answer: Paris

Important Pairs

Country.      Capital

India.     New Delhi

Bangladesh.     Dhaka

Nepal.      Kathmandu

Bhutan.     Thimphu

China.      Beijing

Japan.      Tokyo

France.      Paris

Russia.      Moscow

USA.       Washington, D.C.

UK.         London






16. Country and Currency Analogy

Examples

India : Rupee :: USA : ?

Answer: Dollar

Japan : Yen :: Bangladesh : ?

Answer: Taka

Important pairs:

India → Rupee

USA → Dollar

UK → Pound Sterling

Japan → Yen

Bangladesh → Taka

China → Yuan/Renminbi

Russia → Ruble

Nepal → Nepalese Rupee





17. Instrument and Measurement Analogy

Instrument

Measures/Records

Thermometer.      Temperature

Barometer.      Atmospheric pressure

Hygrometer.       Humidity

Anemometer.      Wind speed

Rain gauge.     Rainfall

Seismograph.       Earthquake vibrations

Ammeter.       Electric current

Voltmeter.       Voltage

Lactometer.        Relative density of milk

Hydrometer.       Relative density of liquids

Example

Thermometer : Temperature :: Hygrometer : ?

Answer: Humidity





18. Number Analogy

Number analogy is one of the most important forms of analogy in reasoning.

Basic Form

a : b :: c : ?

You need to discover the mathematical relationship between a and b.

19. Addition-Based Analogy

Example

7 : 12 :: 15 : ?

7 + 5 = 12

Therefore:

15 + 5 = 20

Answer: 20





20. Subtraction-Based Analogy

Example

20 : 15 :: 30 : ?

20 − 5 = 15

Therefore:

30 − 5 = 25

Answer: 25





21. Multiplication-Based Analogy

Example

6 : 24 :: 9 : ?

6 × 4 = 24

9 × 4 = 36

Answer: 36





22. Division-Based Analogy

Example

40 : 8 :: 60 : ?

40 ÷ 5 = 8

60 ÷ 5 = 12

Answer: 12





23. Square-Based Analogy

Example

5 : 25 :: 8 : ?

5² = 25

8² = 64

Answer: 64






24. Cube-Based Analogy

Example

3 : 27 :: 4 : ?

3³ = 27

4³ = 64

Answer: 64





25. Double and Half Analogy

Example

8 : 16 :: 15 : ?

8 × 2 = 16

15 × 2 = 30

Answer: 30

Another example:

20 : 10 :: 36 : ?

20 ÷ 2 = 10

36 ÷ 2 = 18





26. Difference-Based Analogy

Sometimes the difference between numbers is important.

Example

12 : 20 :: 25 : ?

12 + 8 = 20

Therefore:

25 + 8 = 33






27. Product of Digits

Sometimes the answer is obtained by multiplying the digits.

Example

24 : 8 :: 36 : ?

2 × 4 = 8

3 × 6 = 18

Answer: 18





28. Sum of Digits

Example

25 : 7 :: 38 : ?

2 + 5 = 7

3 + 8 = 11

Answer: 11





29. Mixed Mathematical Analogy

Some questions require more than one operation.

Example

3 : 11 :: 5 : ?

3 × 3 + 2 = 11

Therefore:

5 × 5 + 2 = 27

Answer: 27





30. Alphabet Analogy

Alphabet analogy is based on the positions of letters.

Alphabet Positions

Letter

Position

Letter

Position

A1

N14

B2

O15

C3

P16

D4

Q17

E5

R18

F6

S19

G7

T20

H8

U21

I9

V22

J10

W23

K11

X24

L12

Y25

M13

Z26





31. Forward Alphabet Analogy

Example

A : C :: D : ?

A → C = +2

D → F = +2

Answer: F

Another Example

B : F :: C : ?

B → F = +4

C → G = +4

Answer: G





32. Backward Alphabet Analogy

Example

F : C :: H : ?

F → C = −3

H → E = −3

Answer: E





33. Reverse Alphabet

In reverse order:

A ↔ Z

B ↔ Y

C ↔ X

D ↔ W

E ↔ V

F ↔ U

G ↔ T

H ↔ S

I ↔ R

J ↔ Q

K ↔ P

L ↔ O

M ↔ N

Example

A : Z :: B : ?

Answer: Y




34. Letter Pair Analogy

Example

AB : CD :: EF : ?

A → C

B → D

Therefore:

E → G

F → H

Answer: GH





35. Letter Coding Analogy

Each letter may be shifted by a fixed number.

Example

CAT : DBU :: DOG : ?

Each letter moves one step forward:

C → D

A → B

T → U

Therefore:

D → E

O → P

G → H

Answer: EPH





36. Letter-Number Analogy

Letters may be converted into their numerical positions.

Example

A : 1 :: D : ?

A = 1

D = 4

Example

C : 3 :: H : ?

H = 8




37. Number-Letter Analogy

The question may provide a number and ask for its corresponding letter.

Example

1 : A :: 4 : ?

4 = D

Answer: D

Example

13 : M :: 20 : ?

20 = T

Answer: T





38. Important General Knowledge Analogies

These are especially useful for competitive examinations.

Examples

India : New Delhi :: Assam : Dispur

Assam : Guwahati :: Meghalaya : Shillong

India : Rupee :: Japan : Yen

Lok Sabha : Speaker :: Rajya Sabha : Chairman

Supreme Court : Chief Justice :: High Court : Chief Justice

Parliament : Legislation :: Judiciary : Justice




39. Geography-Based Analogy

Examples

Ganga : India :: Nile : Egypt

Sahara : Africa :: Gobi : Asia

Himalayas : India :: Alps : Europe

Such questions test geographical relationships.





40. Science-Based Analogy

Examples

Heart : Blood :: Lungs : Air

Kidney : Urine :: Lungs : Carbon dioxide

Chlorophyll : Photosynthesis :: Haemoglobin : Blood

Neuron : Nervous system :: Nephron : Kidney





41. Important Political Science Analogies

Useful for ADRE and other examinations:

Parliament : Law-making :: Judiciary : Justice

Executive : Administration :: Legislature : Legislation

Election Commission : Elections :: UPSC : Recruitment

President : Union :: Governor : State

Lok Sabha : Speaker :: Rajya Sabha : Chairman




42. Economics-Based Analogy

Examples

RBI : Monetary Policy :: Government : Fiscal Policy

Bank : Deposit :: Insurance Company : Premium

Demand : Consumer :: Supply : Producer

These questions test conceptual relationships.





43. How to Solve Analogy Questions

Follow these steps.

Step 1: Study the first pair

Suppose:

Teacher : School

Ask:

What is the exact relationship?

Answer: Place of work

Step 2: Apply the same relationship

Suppose:

Doctor : ?

Doctor's place of work = Hospital

Step 3: Check the options

Select the option that follows the same relationship, not merely a related word.

44. Number Analogy Solving Strategy

For number questions, use this order:

First check:

Addition

Subtraction

Multiplication

Division

Then check:

Square

Cube

Double/Half

Difference

Sum of digits

Product of digits

Combination of operations

Example

8 : 64 :: 6 : ?

First check square:

8² = 64

Therefore:

6² = 36

45. Alphabet Analogy Solving Strategy

For alphabet questions:

Step 1

Convert letters into numbers.

Example:

D = 4

Step 2

Find the difference.

Example:

D → H

4 → 8

Difference = +4

Step 3

Apply the same difference.

If:

D : H :: F : ?

F = 6

6 + 4 = 10 = J

Answer: J




46. Common Mistakes

Mistake 1: Using a different relationship

If:

Pen : Write

you should not use "Pen is made of plastic" for the next pair.

Mistake 2: Ignoring direction

Teacher : Student is different from Student : Teacher.

Mistake 3: Choosing a broadly related option

The correct answer must have the same specific relationship.

Mistake 4: Overcomplicating number questions

Always test simple operations before complicated patterns.

Mistake 5: Forgetting alphabet positions

Memorise:

A=1, B=2, C=3 ... Z=26

47. Quick Revision Table

Relationship

Example

Person–Place

Doctor : Hospital

Person–Tool

Carpenter : Saw

Object–Function

Pen : Writing

Animal–Young One

Cow : Calf

Animal–Sound

Dog : Bark

Animal–Home

Bee : Hive

Part–Whole

Finger : Hand

Synonym

Big : Large

Antonym

Hot : Cold

Cause–Effect

Fire : Smoke

Product–Material

Cloth : Cotton

Country–Capital

India : New Delhi

Country–Currency

India : Rupee

Instrument–Measurement

Thermometer : Temperature

Number–Square

5 : 25

Number–Cube

3 : 27

Alphabet–Position

A : 1

Reverse Alphabet

A : Z

48. Practice Set – ADRE Level

Q1. Book : Reading :: Food : ?

A. Cooking

B. Eating

C. Selling

D. Buying

Q2. Doctor : Hospital :: Judge : ?

A. School

B. Court

C. Office

D. Bank

Q3. 7 : 49 :: 9 : ?

A. 18

B. 27

C. 72

D. 81

Q4. A : D :: F : ?

A. G

B. H

C. I

D. J

Q5. Cow : Calf :: Sheep : ?

A. Kid

B. Lamb

C. Foal

D. Cub

Q6. Pen : Writing :: Knife : ?

A. Cutting

B. Reading

C. Drawing

D. Painting

Q7. Bee : Hive :: Horse : ?

A. Stable

B. Den

C. Nest

D. Burrow

Q8. 24 : 8 :: 36 : ?

A. 6

B. 9

C. 12

D. 18

Q9. Hot : Cold :: Victory : ?

A. Success

B. Defeat

C. Achievement

D. Award

Q10. C : F :: H : ?

A. J

B. K

C. L

D. M

Answers

B — Eating

B — Court

D — 81

C — I

B — Lamb

A — Cutting

A — Stable

B — 9

B — Defeat

B — K





49. Final Exam Tips

For ADRE, SSC, Banking, Railway and similar examinations:

Understand the relationship before looking at the answer.

For numbers, check simple mathematical operations first.

For letters, use A=1 to Z=26.

Learn common GK relationships.

Pay attention to the direction of the relationship.

Eliminate options that do not follow the exact pattern.

Do not assume that the most obvious association is always correct.

Practice different types because analogy questions can change their format.

One-Line Formula

Analogy = Identify the relationship in the first pair + Apply exactly the same relationship to the second pair.

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