Example 1 · level 1
9 : 729 :: 7 : ?
- 56
- 350
- 48
- 343
Show solution
- 9 → 729: rule is n³.
- Apply to 7: 7³ = 343.
Answer: 343
SSC & BANK EXAMS: REASONING · ANALOGY
Number analogy
Find the rule linking the first pair (square, cube, ±1, n × (n + 1) …) and apply the same rule to the third number.
Loading practice…
Worked examples
Example 2 · level 2
2 : 2 :: 3 : ?
- 26
- 18
- 10
- 6
Show solution
- 2 → 2: rule is n × (n − 1).
- Apply to 3: 3 × (3 − 1) = 6.
Answer: 6
Example 3 · level 3
7 : 50 :: 5 : ?
- 126
- 125
- 25
- 26
Show solution
- 7 → 50: rule is n² + 1.
- Apply to 5: 5² + 1 = 26.
Answer: 26