乜野情況下4減1會待於5?作者: Dicksonlam 時間: 2010-3-13 12:52 AM
計錯果時作者: skyhookii 時間: 2010-3-13 12:59 AM
1. When counting the number of corners after one is "chopped" off a quadrilateral2. When using Roman numerals, taking the I (one) off IV (four) makes V (five)