Select the pair in which the numbers are related to each other in the same way as are the numbers in the given pairs.
(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.)
12 : 25
11 : 23
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 21 : 43.
Logic: (first number × 2) + 1
12 : 25
(12 × 2) + 1 = 24 + 1 = 25
11 : 23
(11 × 2) + 1 = 22 + 1 = 23
Similarly, 21 : 43
(21 × 2) + 1 = 42 + 1 = 43