Exams › SSC CGL (Prelims) › General
Three of the following number pairs share a common mathematical relationship. Identify the pair that does NOT follow the same pattern.
- 15 : 197
- 25 : 167
- 27 : 181
- 21 : 139
Correct answer: 15 : 197
Solution
For 25:167, 27:181, and 21:139 the ratio second/first is approximately 6.68, 6.70, and 6.62 respectively — all close to 20/3. For 15:197 the ratio is about 13.1, which breaks the pattern entirely. Hence 15:197 is the odd pair.
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