उस विकल्प का चयन कीजिए जो प्रश्न चिह्न को प्रतिस्थापित करेगा। 49 : 81 :: 100 : ?

108 is related to 12 following a certain logic. Following the same logic, 234 is related to 26. To which of the following is 198 related, following the same logic? (NOTE: Operations should be performed on whole numbers.)

Select the option that follows the same set of mathematical operations as given in the reference sets below. (NOTE: Operations must be performed on whole numbers without breaking down digits.) Set 1: 8 - 64 - 84 - 252 Set 2: 12 - 144 - 164 - 492