Complete Guide to Analogy for Competitive Exams: Master Number & Word Logic

💧 Understanding the Concept of Analogy

In the context of competitive exams (like SSC, Banking, RRB, and UPSC CSAT), an Analogy is a comparison between two different entities to highlight some form of similarity or relationship. The core objective is to identify the underlying logical rule connecting the first pair of elements and apply that exact same rule to deduce the missing element in the second pair. The standard format is usually represented mathematically as $A : B :: C : D$, meaning "A is to B as C is to D".

Word Analogy Tests vocabulary & GK

Number Analogy Tests calculation & logic

Alphabet Analogy Tests positional values

💧 Learning Phases & Strategy

To master Analogy, aspirants must transition from simple recognition to decoding complex, multi-layered mathematical relationships.

📚 Basic Level Preparation

At the fundamental stage, focus on direct relationships.

Word Level: Synonyms, Antonyms, Worker-Tool (e.g., Chef : Knife), Country-Capital.
Number Level: Direct squares or cubes. Example equation: $n : n^2$. If $4 : 16 :: 5 : x$, then $x = 25$.

⚙️ Average Level Preparation

Intermediate questions combine two logical steps. For number analogies, look for arithmetic progressions or dual operations.

Equation Logic: $n : (n^2 + n)$ or $n : (n \times 2 + 3)$.
Example: $5 : 30 :: 7 : ?$ Here, the logic is $n : n^2 + n$. So, $5^2 + 5 = 30$, meaning the answer is $7^2 + 7 = 56$.

🚀 Advanced Level Preparation

Advanced problems involve prime number sequences, digit sums, or complex algebraic expressions.

Equation Logic: $n : (n^3 - n^2)$ or logic based on the sum of digits of $n$.
Example: $12 : 20 :: 30 : ?$ The logic relies on consecutive multiplications: $3 \times 4 : 4 \times 5 :: 5 \times 6 : 6 \times 7$. Thus, $x = 42$.

📚 Competitive Prelims Quiz Corner

1. In a number analogy, if the relationship is given by the formula $x : (x^3 - x)$, what will be the missing number in the sequence $4 : 60 :: 6 : ?$