An urn (vase) contains 10 balls that are exactly alike except that 5 are red, 3 are blue, and 2 are green. What is the probability that, in picking up a single ball, the ball is
(a) Red?
(b) Blue?
(c) Green?
(d) Nonblue?
(e) Nongreen?
( f ) Green or nongreen?
(g) What are the odds of picking a blue ball?
(h) What are the odds of not picking a blue ball?