Worried your boyfriend is never going to propose? Then buy him a calculator. Mathematicians have come up with a 'fiancee formula' that allows men to work out the perfect time to pop the question.
担忧你的男朋友永远不会向你求婚吗？那就给他买一个日历。数学家已经计算出最佳的求婚公式，让男士们选择最佳的求婚时间。
All he needs is the age he would first consider marrying and his cut-off point, and the equation does the rest.
在计算过程中，只需提供最初考虑结婚的年龄和最迟结婚期限，剩下的都交给公式来处理。
Professor Dooley, of New South Wales University in Sydney, added: "Probability isn't the most romantic basis for a marriage but while the formula won't fit everyone it does seem to fit a lot of couples, whether through accident or design."
悉尼新南威尔士大学的杜利教授说：“概率不是婚姻最为浪漫的基础，但尽管这一公式不适用于每一个人，它确实适用于很多夫妻，不论是巧合还是精心设计的。”
数学家计算出最佳的求婚时间
1、确定最迟结婚期限（n），如39岁
2、确定最早考虑结婚问题的年龄（p），如20岁
3、用n减p，再乘以0.368，得到6.992
4、再将该数值加上p，得出最佳结婚年龄为27
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