so probablity is (desired outcomes)/(total possibele outcomes)
so let's find the probablities of drawing a blue chip then a red chip
BLUE: desired outcomes=20
total possible=100
probablity=20/100=2/10=1/5
RED: desired outcomes=20
total possible=100
probablity=80/100=8/10=4/5
so it is a probbilty of 1/5 of drawing a blue chip first
it is s probablity of 4/5 of drawing a red chip foirst