Question
Select the set in which the numbers are related in the
same way as are 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 its 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)Solution
The pattern followed in the given sets is: (First term + Second term) × (Second term - First term) = Third term  (7, 11, 72) → (7 + 11) × (11 - 7) = 18 × 4 = 72 (5, 8, 39) → (5 + 8) × (8 - 5) = 13 × 3 = 39  (2, 3, 1) → (2 + 3) × (3 - 2) = 5 × 1 = 1 (4, 7, 33) → (4 + 7) × (7 - 4) = 11 × 3 = 33 (5, 2, 23) → (5 + 2) × (5 - 2) = 7 × 3 = 21 (5, 6, 13) → (5 + 6) × (6 - 5) = 11 × 1 = 11
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