Four number pairs have been given out of which three are alike in some manner and one is sdifferent ...........

Logical Resoning (CGL) Classification

Four number-pairs have been given, out of which three are alike in some manner and one is sdifferent. Select the number-pair

that is different.

This questions was previously asked in

SSC CGL 16th August 2021 Shift-1

15 : 197

25 : 167

27 : 181

21 : 139

- To find the different number-pair, identify a pattern or rule followed by three pairs that is not followed by the one that is different.

- Option 1: 15 : 197

- 15 squared is 225, which does not relate directly to 197 in a straightforward arithmetic pattern.

- Option 2: 25 : 167

- 25 squared is 625, which reduced by 458 results in 167.

- Option 3: 27 : 181

- 27 squared is 729, which reduces by 548 to get 181.

- Option 4: 21 : 139

- 21 squared is 441, which reduced by 302 results in 139.

- The unusual pattern is applying subtraction of two numbers.

- Option 1 does not fit this pattern.

- Therefore, the number-pair that is different is:

Option 1: 15 : 197

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