Changed startnum/endnum to range, removed surpuflous Array method
multiples method if statement to post fix
Remembered existence of .select and ||, created one line that performs function.
Cleaned up commented out code
Euler 2
unless statement  rewritten post fix
Euler 3- had to look up .prime_division.
Refactored to remove unnecessary variable
Euler 4
Rough draft working program
Not working but out of working time.