Given below are two sets of numbers. In each set of numbers, a certain mathematical operation on the first number results in the second number. Which of the options follows the same operation as given in the question?
(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.)
(21, 10)
(87, 43)
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. (27, 13).
(21, 10) → 10 × 2 + 1 = 21
(87, 43) → 43 × 2 + 1 = 87
Similarly, (27, 13) → 13 × 2 + 1 = 27