Number Analogy SSC MTS Questions

2 is related to 61 following a certain logic. Following the same logic, 15 is related to 76. To which of the following is 18 related, following the same logic?
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
SSC MTS 2021-13.11.2024-3

In a certain code language, ‘ZERO’ is coded as ‘2468’ and ‘OILY’ is coded as ‘5679’. What is the code for ‘O’ in that language?
SSC MTS 2021-14.11.2024-1

8 is related to 33 following a certain logic. Following the same logic, 11 is related to 45. To which of the following is 24 related, following the same logic?
(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.)
SSC MTS 2021-14.11.2024-1

In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the set in which the numbers are related in the same way as are the numbers of the following sets.
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying 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, 43
13, 63
SSC MTS 2021-14.11.2024-1

EJ68 is related to OT55 in a certain way. In the same way, KP47 is related to UZ34. To which of the following is QV29 related, following the same logic?
SSC MTS 2021-14.11.2024-1

In a certain code language, ‘LIVE’ is coded as ‘2648’ and ‘EAST’ is coded as ‘3215’. What is the code for ‘E’ in that language?
SSC MTS 2021-23.10.2024-1