Select the set in which the numbers are related in the same way as the numbers of the following sets:
(7,11, 72) (5, 8, 39)
(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)
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. (4, 7, 33).
(7,11, 72) = (7 + 11) × (11 - 7) = 18 × 4 = 72
(5, 8, 39) = (8 + 5) × (8 - 5) = 13 × 3 = 39
(4, 7, 33) = (7 + 4) × (7 - 4) = 11 × 3 = 33