Question
The second number in the given number-pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) is/are followed in all the number-pairs, except one. Find that odd number-pair. (NOTE: The relation should be found without breaking down the numbers into its constituent digits) (18 : 306) : : (13 : 182) : : (25 : 650) : : (23 : 552)
This question was previously asked in
SSC CGL 2024 (Tier-I) Previous Year Paper (17-Sep-2024) (Shift 3)
The correct answer is
18 : 306
Given Pairs:
- (18 : 306)
- (13 : 182)
- (25 : 650)
- (23 : 552)
Step-by-Step Analysis:
- (18 : 306) → 18 × 17 = 306 ✅ (n × (n - 1))
- (13 : 182) → 13 × 14 = 182 ✅ (n × (n + 1))
- (25 : 650) → 25 × 26 = 650 ✅ (n × (n + 1))
- (23 : 552) → 23 × 24 = 552 ✅ (n × (n + 1))
Conclusion:
The first pair (18 : 306) is the odd one out because it uses n × (n - 1) while all others use n × (n + 1).
Answer: (18 : 306)
Was this answer helpful?
Important Questions from Angles and measures in degrees and radians
If P = sin20 θ + cos48 θ, then the inequality that holds for all values of θ is
Express \({\pi\over 12}\) radians in degrees.
- Which of the following angles is same as 135° ?
- Which of the following is the best approximated degree measure of 4 radians?
30 degree is equal to _________ radians.
Need Expert Advice?
Upcoming Exams
SSC CGL
September 30, 2026
UPSSSC PET
October 23, 2026
Test Series
SSC
SSC CGL (Tier I + Tier II) 2026 Mock Test Series - Latest Pattern
2503 Tests 6 Tests Free
5467 Attempts
4.2(868)
English, Hindi
More Questions from SSC CGL
