Lisa, bill and destiny had their arms measured. they compared them to a standard of 22 inches. order these rational numbers from least to greatest:
-1/4 negative one fourth
1 3/4 one and three fourths
-1/2 negative one half

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?