railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Logical Reasoning Classification Number Based
In each of the number-pairs, the second number is obtained by performing a certain mathematical operation on the first number. Three of the following pairs follow the same pattern and thus form a group. Select the number-pair that does NOT belong to that group.
1
14 ∶ 207
2
12 ∶ 155
3
18 ∶ 345
4
16 ∶ 267