railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Logical Reasoning Classification Number Based
The second number in the given number pairs is obtained by performing certain mathematical operations(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair.
1
5 ∶ 20
2
4 ∶ 12
3
7 ∶ 42
4
6 ∶ 36