Question

What digits do the letters represent in this sum? ODD + ODD + OLD = LEO

Each letter can be replaced by only one digit, and no digit is used for two different letters.

Answer 1

Yea a challenging one.

First thing to note, O must be 3 or less than 3. since the addition of 3, 3- digits number, result in another 3 digit number.

Next, since O must be 3 or less, the addtion of 3 D, must give O, thus the possiblity of only 1, 4, 7. (since 1x3=3 , 4x3=12 (O can be 2) , 7x3=21 (O can be 1)

Since u got 3 possiblities, u can just trial and error.