## As Easy As 1234

#### Problem

Using each of the digits 1, 2, 3, and 4, once and only once, with the basic rules of arithmetic (+, –, , ÷, and parentheses), express all of the integers from 1 to 25.

For example, 1 = 2 3 – (1 + 4)

Problem ID: 13 (Sep 2000) Difficulty: 1 Star