What is the difference between the number 49 and the number obtained by adding 4 to each digit of 49?

Given number: 49

Add 4 to each digit of 49

The first digit is 4 → 4 + 4 = 8

The second digit is 9 → 9 + 4 = 13

8 and 13 → the new number becomes 813

Difference:

Original number = 49
New number = 813

813 − 49 = 764

Thus, correct option is (d).