Correct Answer - Option 3 : 36
Checking with the options we get,
In option (3)
Sum of the digits of 36 = 3 + 6 = 9
Twice the sum of 36's digits = 2 (3 + 6) = 2 × 9
= 18
Product of the digit 36 = 3 × 6
= 18
Here product (18) is twice of sum (9).
So, 36 is the number whose digits product is twice the sum of its digits.
Hence, ‘36’ is the correct answer.