## Four Fours

#### Problem

Using exactly four fours and the simple rules of arithmetic, express all of the integers from 1 to 25.

For example, | 1 = | 4 4 | + 4 – 4, | 2 = | 4 4 | + | 4 4 | and 3 = | 4 + 4 + 4 4 |

Problem ID: 14 (Sep 2000) Difficulty: 1 Star

Using exactly four fours and the simple rules of arithmetic, express all of the integers from 1 to 25.

For example, | 1 = | 4 4 | + 4 – 4, | 2 = | 4 4 | + | 4 4 | and 3 = | 4 + 4 + 4 4 |

Problem ID: 14 (Sep 2000) Difficulty: 1 Star