11 is related to 65 following a certain logic. Following the same logic, 16 is related to 90. To which of the following is 21 related following the same logic?
(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.)
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 115.
11 is related to 65 → 11 × 5 + 10 = 65
16 is related to 90 → 16 × 5 + 10 = 90
Similarly, 21 is related → 21 × 5 + 10 = 115