In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the set in which the numbers are related in the same way as are the numbers of the following sets.
(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)
5, 128
9, 732

Correct option is B

The mathematical pattern used in the given pairs:
5 → 128
9 → 732
Step 1: Identify a pattern
Let's test some operations:
5³+3=125+3=128
9³+3=729+3=732

So, the pattern is:

N^3 + 3 = {Second number}
Step 2: Apply this pattern to the options
Option A: 5 → 50
5³+3=125+3=128
Option B: 3 → 30
3³+3=27+3=30
Option C: 4 → 46
4³+3=64+3=67
Option D: 2 → 13
2³+3=8+3=11
Correct Answer:
B) 3, 30.