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 1and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

3 : 25

4 : 62​​

Given: 

3 : 25

4 : 62​​

Checking the given pairs:

Now, checking the options:

(a); 9 → (9³ - 2) = 729 - 2 = 727  (Does not match 731)

(c); 7 → (7³ - 2) = 343 - 2 = 341  (Does not match 345)

(d); 6 → (6³ - 2) = 216 - 2 = 214  (Does not match 218)

Thus, correct option is (b).