Select the set in which the numbers are related in the same way as are the numbers of the following set.
(84, 63, 42)
(79, 47, 64)
(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.)
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. (71, 53, 36).
Logic: (1st number - 2nd number) × 2 = 3rd number
(84, 63, 42) → (84 - 63) × 2 = 21 × 2 = 42
(79, 47, 64) → (79 - 47) × 2 = 32 × 2 = 64
Similarly, (71, 53, 36) → (71 - 53) × 2 = 18 × 2 = 36