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/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)
(16, 40, 5),

(3, 27, 18)​​

Given: 

(16, 40, 5),

(3, 27, 18)​​

Logic: Product of first and third number is divided by 2 to get second number.

As,

(16, 40, 5)

(16×5)÷2 = 80÷2 = 40

And

(3, 27, 18)

(3×18)÷2 = 54÷2 = 27

Now,

Check Option A. (8, 29, 7)

(8×7)÷2 = 56÷2 = 28

So, its not correct.

Check Option B. (9, 27, 6)

(9×6)÷2 = 54÷2 = 27

Check Option C. (7, 26, 8)

(7×8)÷2 = 56÷2 = 28

So, its not correct.

Check Option D. (9, 35, 6)

(9×6)÷2 = 54÷2 = 27

So, its not correct.

Thus, correct option is (b).