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 their 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)
(63, 81, 7) (84, 49, 12)
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. (99, 121, 9).
(63, 81, 7) = √81 = 9, 9 × 7 = 63
(84, 49, 12) = √49 = 7, 7 × 12 = 84
(99, 121, 9) = √121 = 11, 11 × 9 = 99