ya i know its about probablity, my friend study business kpkb about
this module to me.
But i thought this module is for business school ppl only, how
come engineering also have?
We are engineers leh, take A maths also so chim, still need to
take this lan jiao module. 
maybe diff bah.
but my fren say tis module ez leh
so i must study n do well for tis module