Ben Chuanlong Du's Blog

It is never too late to learn.

Tips on Verizon

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Names of Lines

Roles of Lines

Tips As Owner of Verizon Family Plan

It is suggested that you accepts a new member into a family plan only if they already own …

Ratio of Boy to Girl

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

In a country, all families prefer to have boys. They will keep having baby until they have a boy. After a long time, what is the ratio of boys to girls …