Number Classification SSC CHSL Questions

The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) is/are followed in all the number pairs except one. Find that odd number pair.
SSC CHSL 2023-09.08.2023-1

Select the number pair in which the numbers are related in the same way as the numbers of the given number pairs.
(Note: Operations should be performed on the whole numbers, without breaking down into their constituent digits. E.g., 13 → Operations on 13 such as adding/deleting/multiplying, etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
15 : 90
12 : 288
SSC CHSL 2023-09.08.2023-1

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.
SSC CHSL 2023-09.08.2023-2

In the following number pairs, the second number is obtained by applying certain mathematical operations to the first numbers. Select the option in which the numbers are related in the same way as are the numbers of the following pair:
(NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g, 13 – Operations on 13 such as adding/deleting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
16, 107
12 ,79
SSC CHSL 2023-09.08.2023-3

Four number pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different.
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g.13 – Operations on 13 such as adding /subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
9 :720
5:134
7:334
11:1322
SSC CHSL 2023-09.08.2023-4

In the following number-pairs, the second number is obtained by applying certain arithmetical operations to the first number. Select the set in which the numbers are related in the same way as the numbers of the following sets.
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g.13 – Operations on 13 such as adding /subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
(45, 80)
(37, 64)
SSC CHSL 2023-09.08.2023-4