1. Someone wrote a biography for Steve Jobs, and the book used to be one of the bestsellers at every major bookstore.2. My dad said he wants to write an autobiography, but I doubt anyone would want to read it.
 biography autobiographybiography 是別人替當事人寫的自傳，而 autobiography 是當事人寫自己的自傳。
I have been wecking my brain on this tough math question but I still cannot solve it.