hello, so my pre physcis lab for vectors says to write down the last three non-zero digits of your student number as a value for " C ". (for example

hello, so my pre physcis lab for vectors says to write down the last three non-zero digits of your student number as a value for "C". 

(for example 203304007 would yield 347)

• Calculate the vector magnitude components as: Mx = C, My = C/2 my question is what do they mean by "c" value?  is like (x=3,Y=4, Z=7) i don't really understand and how to find the magnitude and the position. I'm not familiar with vectors
• Calculate the vector position components as: Px = -C/3, Py = -C/4