How do you turn an odd number into even by removing one letter?怎样回答这句话

问题描述:

How do you turn an odd number into even by removing one letter?
怎样回答这句话

seven,去掉S,就变成even.这句话中的 even 不理解成偶数,而是看成是一个字,有点脑筋急转弯的味道.