In the following number-pairs, the second number is obtained by applying certain mathematical operation(s) to the first number. Select the number-pair in which the numbers are related in the same way as the numbers of the given pairs. (Note: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits.)18, 14142, 165

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