The second number in the given number pairs is obtained by performing certain mathematical operation...........

General Intelligence and Reasoning (CHSL) Classification

The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number.

The same operation(s) are followed in all the number pairs, EXCEPT one. Find that odd number pair.

This questions was previously asked in

SSC CHSL 2nd June 2022 Shift-1

40 : 120

50 : 150

30 : 80

20 : 60

Sure, let’s dig into this.

- Here’s the pattern: For most of these pairs, the second number is just three times the first.

- 40 : 120 ? 40 × 3 = 120

- 50 : 150 ? 50 × 3 = 150

- 20 : 60 ? 20 × 3 = 60

- But then you get to 30 : 80.

- 30 × 3 = 90, not 80.

- Clearly, this one breaks the pattern.

So, the odd one out is ??

Option 3: 30 : 80

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