19 is related to 39 following a certain logic. Following the same logic, 1 is related to 3. To which of the following is 3 related following the same logic?
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbersinto its constituent digits. E.g. 13 – Operations on 13 such as adding /subtracting /multiplying etc. to 13can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1and 3 is not allowed)
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 7.
19 is related to 39 → 19 × 2 + 1 = 39
1 is related to 3 → 1 × 2 + 1 = 3
Similarly, 3 is related → 3 × 2 + 1 = 7