Question

Rewrite the expression ab dc ef such that each variable is replaced by a different non- zero digit and the value of expression is 1. (The answer may not be unique.)

Answer 1

ab dc ef is replaced by 12 43 56

Explanation:

ab dc ef are replaced by the position they take when writing in an alphabetical order. a is 1, b is 2, c is 3, and so on.

So, ab dc ed is written as

12 43 56

and

56 - 43 - 12 = 1