Cryptarithmetic problems - eLitmus

Rules for solving Cryptarithmetic Problems

Each Letter or Symbol represents only one digit throughout the problem

When letters are replaced by their digits,the resultant arithmetical operation must be correct.

Our aim is to find the value of each letter. 

No two letters represent the same digit (If A = 2, B cannot be 2 and so on).

Number can't begin with 0

Rules are:

1. 0 * n = 0

2. 1 * n = n

3. 5 * odd number = x5

     like 5 * 1 = 05 (x = 0)

     5 * 3 = 15 (x = 1)

     5 * 7 = 35 (x = 3)

     5 * 9 = 45 (x = 4)

4. 5 * even number = always 0
 
  like   5 * 2 = 0

          5 * 4 = 0

          5 * 6 = 0

          5 * 8 = 0

5.. even number * 6 = (x)(even number) where x can be 1/2/4

     like 2 * 6 = 12 (x = 1)

     4 * 6 = 24 (x = 2)

     8 * 6 = 35 (x = 4)